/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:58:12,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:58:12,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:58:12,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:58:12,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:58:12,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:58:12,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:58:12,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:58:12,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:58:12,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:58:12,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:58:12,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:58:12,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:58:12,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:58:12,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:58:12,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:58:12,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:58:12,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:58:12,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:58:12,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:58:12,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:58:12,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:58:12,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:58:12,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:58:12,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:58:12,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:58:12,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:58:12,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:58:12,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:58:12,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:58:12,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:58:12,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:58:12,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:58:12,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:58:12,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:58:12,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:58:12,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:58:12,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:58:12,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:58:12,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:58:12,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:58:12,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 18:58:12,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:58:12,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:58:12,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:58:12,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:58:12,374 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:58:12,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:58:12,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:58:12,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:58:12,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:58:12,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:58:12,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:58:12,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:58:12,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:58:12,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:58:12,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:58:12,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:58:12,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:58:12,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:58:12,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:58:12,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:58:12,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:58:12,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:58:12,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:58:12,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:58:12,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:58:12,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:58:12,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:58:12,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:58:12,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:58:12,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:58:12,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:58:12,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:58:12,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:58:12,652 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:58:12,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-04-17 18:58:12,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2841b67e/75b4c9cbe2744e86b1ede4289afdd8e8/FLAG5324f0714 [2020-04-17 18:58:13,284 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:58:13,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-04-17 18:58:13,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2841b67e/75b4c9cbe2744e86b1ede4289afdd8e8/FLAG5324f0714 [2020-04-17 18:58:13,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2841b67e/75b4c9cbe2744e86b1ede4289afdd8e8 [2020-04-17 18:58:13,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:58:13,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:58:13,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:58:13,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:58:13,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:58:13,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:58:13" (1/1) ... [2020-04-17 18:58:13,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acddeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:13, skipping insertion in model container [2020-04-17 18:58:13,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:58:13" (1/1) ... [2020-04-17 18:58:13,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:58:13,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:58:14,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:58:14,119 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:58:14,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:58:14,249 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:58:14,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14 WrapperNode [2020-04-17 18:58:14,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:58:14,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:58:14,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:58:14,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:58:14,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:58:14,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:58:14,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:58:14,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:58:14,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (1/1) ... [2020-04-17 18:58:14,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:58:14,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:58:14,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:58:14,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:58:14,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (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 [2020-04-17 18:58:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 18:58:14,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 18:58:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:58:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:58:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:58:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:58:14,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:58:14,383 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:58:14,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:58:14,658 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-04-17 18:58:14,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:58:14 BoogieIcfgContainer [2020-04-17 18:58:14,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:58:14,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:58:14,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:58:14,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:58:14,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:58:13" (1/3) ... [2020-04-17 18:58:14,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4540c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:58:14, skipping insertion in model container [2020-04-17 18:58:14,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:58:14" (2/3) ... [2020-04-17 18:58:14,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4540c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:58:14, skipping insertion in model container [2020-04-17 18:58:14,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:58:14" (3/3) ... [2020-04-17 18:58:14,669 INFO L109 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2020-04-17 18:58:14,679 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:58:14,680 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:58:14,700 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:58:14,701 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:58:14,729 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,730 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,730 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,731 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,731 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,731 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,732 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,732 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,732 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,733 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,733 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,733 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,734 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,734 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,738 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,738 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,738 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,739 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,739 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,739 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:14,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 18:58:14,771 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:14,771 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:14,771 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:14,771 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:14,772 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:14,772 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:14,772 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:14,772 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:14,785 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 33 transitions, 71 flow [2020-04-17 18:58:14,787 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-04-17 18:58:14,820 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-04-17 18:58:14,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:58:14,825 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. [2020-04-17 18:58:14,826 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-04-17 18:58:14,839 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-04-17 18:58:14,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:58:14,841 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. [2020-04-17 18:58:14,842 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 240 [2020-04-17 18:58:14,843 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:15,472 INFO L206 etLargeBlockEncoding]: Checked pairs total: 167 [2020-04-17 18:58:15,473 INFO L214 etLargeBlockEncoding]: Total number of compositions: 30 [2020-04-17 18:58:15,478 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-04-17 18:58:15,492 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-04-17 18:58:15,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-17 18:58:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-17 18:58:15,501 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:15,501 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-17 18:58:15,502 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:15,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:15,507 INFO L82 PathProgramCache]: Analyzing trace with hash 4687883, now seen corresponding path program 1 times [2020-04-17 18:58:15,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:15,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460296663] [2020-04-17 18:58:15,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:15,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460296663] [2020-04-17 18:58:15,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:15,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:58:15,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648877928] [2020-04-17 18:58:15,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 18:58:15,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:15,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 18:58:15,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:58:15,711 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-04-17 18:58:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:15,725 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-04-17 18:58:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 18:58:15,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-04-17 18:58:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:15,738 INFO L225 Difference]: With dead ends: 11 [2020-04-17 18:58:15,739 INFO L226 Difference]: Without dead ends: 11 [2020-04-17 18:58:15,740 INFO L678 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 [2020-04-17 18:58:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-04-17 18:58:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-04-17 18:58:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-04-17 18:58:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-04-17 18:58:15,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-04-17 18:58:15,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:15,781 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-04-17 18:58:15,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 18:58:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-04-17 18:58:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 18:58:15,782 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:15,783 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-04-17 18:58:15,783 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:15,784 INFO L82 PathProgramCache]: Analyzing trace with hash 210024220, now seen corresponding path program 1 times [2020-04-17 18:58:15,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:15,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556322951] [2020-04-17 18:58:15,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:15,877 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:15,877 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:15,880 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:15,880 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-17 18:58:15,887 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,887 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,887 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,888 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,888 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,888 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,888 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,888 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,889 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,889 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,889 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,889 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,890 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,890 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,890 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,891 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,891 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,891 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,891 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,891 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,892 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,892 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,892 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,892 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,892 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,893 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,893 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,893 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,894 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,894 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,894 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,894 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,896 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,897 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,897 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,897 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,897 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,898 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:15,901 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 18:58:15,902 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:15,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:15,902 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:15,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:15,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:15,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:15,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:15,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:15,905 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 104 flow [2020-04-17 18:58:15,905 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-04-17 18:58:15,929 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-04-17 18:58:15,930 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-17 18:58:15,933 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. [2020-04-17 18:58:15,938 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-04-17 18:58:15,959 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-04-17 18:58:15,960 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-17 18:58:15,962 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. [2020-04-17 18:58:15,963 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 792 [2020-04-17 18:58:15,964 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:16,696 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1029 [2020-04-17 18:58:16,697 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2020-04-17 18:58:16,697 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 38 flow [2020-04-17 18:58:16,702 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 100 states. [2020-04-17 18:58:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-04-17 18:58:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 18:58:16,704 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:16,704 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 18:58:16,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:16,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash 240626158, now seen corresponding path program 1 times [2020-04-17 18:58:16,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:16,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431594782] [2020-04-17 18:58:16,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:16,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431594782] [2020-04-17 18:58:16,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:16,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:16,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069272885] [2020-04-17 18:58:16,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:16,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:16,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:16,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:16,791 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-04-17 18:58:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:16,827 INFO L93 Difference]: Finished difference Result 96 states and 197 transitions. [2020-04-17 18:58:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:16,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 18:58:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:16,834 INFO L225 Difference]: With dead ends: 96 [2020-04-17 18:58:16,834 INFO L226 Difference]: Without dead ends: 96 [2020-04-17 18:58:16,834 INFO L678 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 [2020-04-17 18:58:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-04-17 18:58:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2020-04-17 18:58:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-04-17 18:58:16,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 180 transitions. [2020-04-17 18:58:16,855 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 180 transitions. Word has length 5 [2020-04-17 18:58:16,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:16,855 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 180 transitions. [2020-04-17 18:58:16,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 180 transitions. [2020-04-17 18:58:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:58:16,856 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:16,857 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:16,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:16,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:16,857 INFO L82 PathProgramCache]: Analyzing trace with hash 109807895, now seen corresponding path program 1 times [2020-04-17 18:58:16,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:16,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970805068] [2020-04-17 18:58:16,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:16,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970805068] [2020-04-17 18:58:16,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:16,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:16,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831226220] [2020-04-17 18:58:16,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:16,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:16,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:16,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:16,894 INFO L87 Difference]: Start difference. First operand 84 states and 180 transitions. Second operand 3 states. [2020-04-17 18:58:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:16,912 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2020-04-17 18:58:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:16,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:58:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:16,914 INFO L225 Difference]: With dead ends: 84 [2020-04-17 18:58:16,914 INFO L226 Difference]: Without dead ends: 84 [2020-04-17 18:58:16,915 INFO L678 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 [2020-04-17 18:58:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-04-17 18:58:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-04-17 18:58:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-04-17 18:58:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 154 transitions. [2020-04-17 18:58:16,926 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 154 transitions. Word has length 8 [2020-04-17 18:58:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:16,927 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 154 transitions. [2020-04-17 18:58:16,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 154 transitions. [2020-04-17 18:58:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:16,928 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:16,928 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:16,928 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:16,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1655579211, now seen corresponding path program 1 times [2020-04-17 18:58:16,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:16,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903980914] [2020-04-17 18:58:16,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:16,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903980914] [2020-04-17 18:58:16,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:16,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:16,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980886954] [2020-04-17 18:58:16,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:16,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:16,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:16,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:16,987 INFO L87 Difference]: Start difference. First operand 76 states and 154 transitions. Second operand 4 states. [2020-04-17 18:58:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:17,024 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-04-17 18:58:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:17,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:17,029 INFO L225 Difference]: With dead ends: 68 [2020-04-17 18:58:17,030 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 18:58:17,030 INFO L678 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 [2020-04-17 18:58:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 18:58:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-04-17 18:58:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-04-17 18:58:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 129 transitions. [2020-04-17 18:58:17,042 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 129 transitions. Word has length 9 [2020-04-17 18:58:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:17,042 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 129 transitions. [2020-04-17 18:58:17,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 129 transitions. [2020-04-17 18:58:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:17,043 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:17,043 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-04-17 18:58:17,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:17,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:17,044 INFO L82 PathProgramCache]: Analyzing trace with hash -891005170, now seen corresponding path program 1 times [2020-04-17 18:58:17,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:17,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942382925] [2020-04-17 18:58:17,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:17,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:17,069 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:17,070 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:17,071 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-17 18:58:17,077 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,079 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,080 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,081 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,081 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,081 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,082 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,082 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,082 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,082 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,082 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,083 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,083 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,084 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,084 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,086 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,088 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,088 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,088 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,088 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,088 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,088 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,093 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,093 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,093 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,093 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,093 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:17,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 18:58:17,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:17,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:17,095 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:17,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:17,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:17,095 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:17,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:17,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:17,098 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 59 transitions, 139 flow [2020-04-17 18:58:17,098 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-04-17 18:58:17,111 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-04-17 18:58:17,112 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-17 18:58:17,113 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. [2020-04-17 18:58:17,115 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-04-17 18:58:17,127 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-04-17 18:58:17,127 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-17 18:58:17,128 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. [2020-04-17 18:58:17,130 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1656 [2020-04-17 18:58:17,130 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:17,838 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-04-17 18:58:17,838 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-04-17 18:58:17,839 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 17 transitions, 55 flow [2020-04-17 18:58:17,858 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 404 states. [2020-04-17 18:58:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states. [2020-04-17 18:58:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 18:58:17,858 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:17,859 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 18:58:17,859 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:17,859 INFO L82 PathProgramCache]: Analyzing trace with hash 359632331, now seen corresponding path program 1 times [2020-04-17 18:58:17,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:17,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195661871] [2020-04-17 18:58:17,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:17,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195661871] [2020-04-17 18:58:17,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:17,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:17,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023068954] [2020-04-17 18:58:17,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:17,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:17,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:17,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:17,897 INFO L87 Difference]: Start difference. First operand 404 states. Second operand 3 states. [2020-04-17 18:58:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:17,931 INFO L93 Difference]: Finished difference Result 447 states and 1247 transitions. [2020-04-17 18:58:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:17,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 18:58:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:17,940 INFO L225 Difference]: With dead ends: 447 [2020-04-17 18:58:17,940 INFO L226 Difference]: Without dead ends: 447 [2020-04-17 18:58:17,940 INFO L678 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 [2020-04-17 18:58:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-04-17 18:58:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 378. [2020-04-17 18:58:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-04-17 18:58:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1099 transitions. [2020-04-17 18:58:18,004 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1099 transitions. Word has length 5 [2020-04-17 18:58:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:18,004 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 1099 transitions. [2020-04-17 18:58:18,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1099 transitions. [2020-04-17 18:58:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:58:18,005 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:18,005 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:18,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2061810264, now seen corresponding path program 1 times [2020-04-17 18:58:18,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:18,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697282387] [2020-04-17 18:58:18,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:18,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697282387] [2020-04-17 18:58:18,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:18,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:18,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34572684] [2020-04-17 18:58:18,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:18,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:18,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:18,033 INFO L87 Difference]: Start difference. First operand 378 states and 1099 transitions. Second operand 3 states. [2020-04-17 18:58:18,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:18,078 INFO L93 Difference]: Finished difference Result 486 states and 1356 transitions. [2020-04-17 18:58:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:18,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:58:18,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:18,084 INFO L225 Difference]: With dead ends: 486 [2020-04-17 18:58:18,084 INFO L226 Difference]: Without dead ends: 486 [2020-04-17 18:58:18,084 INFO L678 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 [2020-04-17 18:58:18,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-04-17 18:58:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 412. [2020-04-17 18:58:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-04-17 18:58:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1196 transitions. [2020-04-17 18:58:18,108 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1196 transitions. Word has length 8 [2020-04-17 18:58:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:18,109 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 1196 transitions. [2020-04-17 18:58:18,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1196 transitions. [2020-04-17 18:58:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:18,109 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:18,110 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:18,110 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:18,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1871610837, now seen corresponding path program 1 times [2020-04-17 18:58:18,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:18,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263176856] [2020-04-17 18:58:18,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:18,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263176856] [2020-04-17 18:58:18,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:18,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:18,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699644925] [2020-04-17 18:58:18,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:18,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:18,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:18,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:18,152 INFO L87 Difference]: Start difference. First operand 412 states and 1196 transitions. Second operand 4 states. [2020-04-17 18:58:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:18,190 INFO L93 Difference]: Finished difference Result 338 states and 962 transitions. [2020-04-17 18:58:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:18,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:18,195 INFO L225 Difference]: With dead ends: 338 [2020-04-17 18:58:18,195 INFO L226 Difference]: Without dead ends: 338 [2020-04-17 18:58:18,195 INFO L678 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 [2020-04-17 18:58:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-04-17 18:58:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 283. [2020-04-17 18:58:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-04-17 18:58:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 793 transitions. [2020-04-17 18:58:18,210 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 793 transitions. Word has length 9 [2020-04-17 18:58:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:18,211 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 793 transitions. [2020-04-17 18:58:18,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 793 transitions. [2020-04-17 18:58:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:18,213 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:18,213 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:18,213 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:18,214 INFO L82 PathProgramCache]: Analyzing trace with hash -508390409, now seen corresponding path program 1 times [2020-04-17 18:58:18,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:18,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872137623] [2020-04-17 18:58:18,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:18,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872137623] [2020-04-17 18:58:18,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:18,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:18,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278790182] [2020-04-17 18:58:18,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:18,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:18,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:18,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:18,281 INFO L87 Difference]: Start difference. First operand 283 states and 793 transitions. Second operand 4 states. [2020-04-17 18:58:18,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:18,317 INFO L93 Difference]: Finished difference Result 233 states and 641 transitions. [2020-04-17 18:58:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:18,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:18,320 INFO L225 Difference]: With dead ends: 233 [2020-04-17 18:58:18,320 INFO L226 Difference]: Without dead ends: 233 [2020-04-17 18:58:18,320 INFO L678 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 [2020-04-17 18:58:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-04-17 18:58:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 183. [2020-04-17 18:58:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-04-17 18:58:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 489 transitions. [2020-04-17 18:58:18,331 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 489 transitions. Word has length 9 [2020-04-17 18:58:18,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:18,331 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 489 transitions. [2020-04-17 18:58:18,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 489 transitions. [2020-04-17 18:58:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:58:18,333 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:18,333 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:18,333 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:18,334 INFO L82 PathProgramCache]: Analyzing trace with hash 960774069, now seen corresponding path program 1 times [2020-04-17 18:58:18,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:18,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759975116] [2020-04-17 18:58:18,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:58:18,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759975116] [2020-04-17 18:58:18,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:18,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:18,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030229779] [2020-04-17 18:58:18,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:18,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:18,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:18,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:18,374 INFO L87 Difference]: Start difference. First operand 183 states and 489 transitions. Second operand 3 states. [2020-04-17 18:58:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:18,393 INFO L93 Difference]: Finished difference Result 243 states and 634 transitions. [2020-04-17 18:58:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:18,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 18:58:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:18,396 INFO L225 Difference]: With dead ends: 243 [2020-04-17 18:58:18,396 INFO L226 Difference]: Without dead ends: 243 [2020-04-17 18:58:18,396 INFO L678 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 [2020-04-17 18:58:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-04-17 18:58:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 211. [2020-04-17 18:58:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-04-17 18:58:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 570 transitions. [2020-04-17 18:58:18,404 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 570 transitions. Word has length 11 [2020-04-17 18:58:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:18,405 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 570 transitions. [2020-04-17 18:58:18,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 570 transitions. [2020-04-17 18:58:18,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:58:18,406 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:18,407 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:18,407 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:18,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:18,407 INFO L82 PathProgramCache]: Analyzing trace with hash -280773966, now seen corresponding path program 1 times [2020-04-17 18:58:18,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:18,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333755194] [2020-04-17 18:58:18,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:58:18,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333755194] [2020-04-17 18:58:18,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:18,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:18,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268720383] [2020-04-17 18:58:18,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:18,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:18,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:18,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:18,433 INFO L87 Difference]: Start difference. First operand 211 states and 570 transitions. Second operand 4 states. [2020-04-17 18:58:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:18,454 INFO L93 Difference]: Finished difference Result 179 states and 474 transitions. [2020-04-17 18:58:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:18,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 18:58:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:18,456 INFO L225 Difference]: With dead ends: 179 [2020-04-17 18:58:18,457 INFO L226 Difference]: Without dead ends: 179 [2020-04-17 18:58:18,457 INFO L678 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 [2020-04-17 18:58:18,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-04-17 18:58:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2020-04-17 18:58:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-04-17 18:58:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 378 transitions. [2020-04-17 18:58:18,462 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 378 transitions. Word has length 12 [2020-04-17 18:58:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:18,462 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 378 transitions. [2020-04-17 18:58:18,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 378 transitions. [2020-04-17 18:58:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:58:18,463 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:18,464 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-04-17 18:58:18,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:58:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:18,464 INFO L82 PathProgramCache]: Analyzing trace with hash -280874677, now seen corresponding path program 1 times [2020-04-17 18:58:18,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:18,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63064652] [2020-04-17 18:58:18,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:18,483 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:18,483 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:18,484 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:18,484 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-17 18:58:18,492 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,492 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,493 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,493 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,494 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,495 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,495 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,495 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,495 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,495 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,495 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,496 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,496 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,496 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,496 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,497 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,497 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,497 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,497 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,515 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,519 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,519 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,521 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,521 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,523 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,523 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,523 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,523 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,523 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,523 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,525 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:18,530 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-17 18:58:18,530 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:18,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:18,530 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:18,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:18,530 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:18,530 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:18,531 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:18,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:18,532 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 72 transitions, 176 flow [2020-04-17 18:58:18,532 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-04-17 18:58:18,546 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-04-17 18:58:18,546 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-17 18:58:18,547 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. [2020-04-17 18:58:18,552 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-04-17 18:58:18,564 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-04-17 18:58:18,564 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-17 18:58:18,565 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. [2020-04-17 18:58:18,569 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-04-17 18:58:18,569 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:19,471 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4290 [2020-04-17 18:58:19,472 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-17 18:58:19,472 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 78 flow [2020-04-17 18:58:19,567 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1620 states. [2020-04-17 18:58:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states. [2020-04-17 18:58:19,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 18:58:19,568 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:19,568 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 18:58:19,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:19,569 INFO L82 PathProgramCache]: Analyzing trace with hash 500888133, now seen corresponding path program 1 times [2020-04-17 18:58:19,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:19,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385405987] [2020-04-17 18:58:19,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:19,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385405987] [2020-04-17 18:58:19,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:19,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:19,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233327648] [2020-04-17 18:58:19,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:19,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:19,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:19,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:19,590 INFO L87 Difference]: Start difference. First operand 1620 states. Second operand 3 states. [2020-04-17 18:58:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:19,640 INFO L93 Difference]: Finished difference Result 1878 states and 6626 transitions. [2020-04-17 18:58:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:19,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 18:58:19,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:19,656 INFO L225 Difference]: With dead ends: 1878 [2020-04-17 18:58:19,656 INFO L226 Difference]: Without dead ends: 1878 [2020-04-17 18:58:19,657 INFO L678 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 [2020-04-17 18:58:19,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-04-17 18:58:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1572. [2020-04-17 18:58:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-04-17 18:58:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 5747 transitions. [2020-04-17 18:58:19,745 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 5747 transitions. Word has length 5 [2020-04-17 18:58:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:19,746 INFO L479 AbstractCegarLoop]: Abstraction has 1572 states and 5747 transitions. [2020-04-17 18:58:19,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 5747 transitions. [2020-04-17 18:58:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:58:19,747 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:19,747 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:19,747 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:19,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1111452433, now seen corresponding path program 1 times [2020-04-17 18:58:19,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:19,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172196313] [2020-04-17 18:58:19,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:19,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172196313] [2020-04-17 18:58:19,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:19,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:19,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960010278] [2020-04-17 18:58:19,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:19,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:19,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:19,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:19,779 INFO L87 Difference]: Start difference. First operand 1572 states and 5747 transitions. Second operand 3 states. [2020-04-17 18:58:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:19,829 INFO L93 Difference]: Finished difference Result 2193 states and 7798 transitions. [2020-04-17 18:58:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:19,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:58:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:19,847 INFO L225 Difference]: With dead ends: 2193 [2020-04-17 18:58:19,848 INFO L226 Difference]: Without dead ends: 2193 [2020-04-17 18:58:19,848 INFO L678 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 [2020-04-17 18:58:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2020-04-17 18:58:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1828. [2020-04-17 18:58:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-04-17 18:58:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 6732 transitions. [2020-04-17 18:58:19,934 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 6732 transitions. Word has length 8 [2020-04-17 18:58:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:19,935 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 6732 transitions. [2020-04-17 18:58:19,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:19,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 6732 transitions. [2020-04-17 18:58:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:19,936 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:19,936 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:19,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:19,937 INFO L82 PathProgramCache]: Analyzing trace with hash -231363678, now seen corresponding path program 1 times [2020-04-17 18:58:19,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:19,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940113507] [2020-04-17 18:58:19,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:19,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940113507] [2020-04-17 18:58:19,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:19,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:19,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188488389] [2020-04-17 18:58:19,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:19,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:19,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:19,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:19,986 INFO L87 Difference]: Start difference. First operand 1828 states and 6732 transitions. Second operand 4 states. [2020-04-17 18:58:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:20,046 INFO L93 Difference]: Finished difference Result 1463 states and 5301 transitions. [2020-04-17 18:58:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:20,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:20,064 INFO L225 Difference]: With dead ends: 1463 [2020-04-17 18:58:20,064 INFO L226 Difference]: Without dead ends: 1463 [2020-04-17 18:58:20,065 INFO L678 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 [2020-04-17 18:58:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-04-17 18:58:20,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1177. [2020-04-17 18:58:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-04-17 18:58:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 4196 transitions. [2020-04-17 18:58:20,173 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 4196 transitions. Word has length 9 [2020-04-17 18:58:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:20,173 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 4196 transitions. [2020-04-17 18:58:20,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 4196 transitions. [2020-04-17 18:58:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:20,174 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:20,174 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:20,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash 95288963, now seen corresponding path program 1 times [2020-04-17 18:58:20,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:20,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832045101] [2020-04-17 18:58:20,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:20,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832045101] [2020-04-17 18:58:20,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:20,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:20,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384851944] [2020-04-17 18:58:20,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:20,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:20,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:20,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:20,203 INFO L87 Difference]: Start difference. First operand 1177 states and 4196 transitions. Second operand 4 states. [2020-04-17 18:58:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:20,246 INFO L93 Difference]: Finished difference Result 950 states and 3337 transitions. [2020-04-17 18:58:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:20,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:20,254 INFO L225 Difference]: With dead ends: 950 [2020-04-17 18:58:20,254 INFO L226 Difference]: Without dead ends: 950 [2020-04-17 18:58:20,255 INFO L678 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 [2020-04-17 18:58:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-04-17 18:58:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 723. [2020-04-17 18:58:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-04-17 18:58:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2478 transitions. [2020-04-17 18:58:20,287 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 2478 transitions. Word has length 9 [2020-04-17 18:58:20,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:20,287 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 2478 transitions. [2020-04-17 18:58:20,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:20,288 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 2478 transitions. [2020-04-17 18:58:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:58:20,288 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:20,288 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:20,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1255400151, now seen corresponding path program 1 times [2020-04-17 18:58:20,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:20,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953808002] [2020-04-17 18:58:20,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:58:20,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953808002] [2020-04-17 18:58:20,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:20,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:20,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121860365] [2020-04-17 18:58:20,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:20,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:20,312 INFO L87 Difference]: Start difference. First operand 723 states and 2478 transitions. Second operand 3 states. [2020-04-17 18:58:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:20,347 INFO L93 Difference]: Finished difference Result 1044 states and 3505 transitions. [2020-04-17 18:58:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:20,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 18:58:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:20,357 INFO L225 Difference]: With dead ends: 1044 [2020-04-17 18:58:20,357 INFO L226 Difference]: Without dead ends: 1044 [2020-04-17 18:58:20,359 INFO L678 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 [2020-04-17 18:58:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-04-17 18:58:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 880. [2020-04-17 18:58:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-04-17 18:58:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3058 transitions. [2020-04-17 18:58:20,394 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 3058 transitions. Word has length 11 [2020-04-17 18:58:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:20,394 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 3058 transitions. [2020-04-17 18:58:20,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 3058 transitions. [2020-04-17 18:58:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:58:20,395 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:20,395 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:20,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash 262700715, now seen corresponding path program 1 times [2020-04-17 18:58:20,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:20,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777885133] [2020-04-17 18:58:20,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:58:20,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777885133] [2020-04-17 18:58:20,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:20,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:20,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071312515] [2020-04-17 18:58:20,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:20,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:20,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:20,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:20,425 INFO L87 Difference]: Start difference. First operand 880 states and 3058 transitions. Second operand 4 states. [2020-04-17 18:58:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:20,457 INFO L93 Difference]: Finished difference Result 716 states and 2447 transitions. [2020-04-17 18:58:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:20,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 18:58:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:20,464 INFO L225 Difference]: With dead ends: 716 [2020-04-17 18:58:20,464 INFO L226 Difference]: Without dead ends: 716 [2020-04-17 18:58:20,464 INFO L678 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 [2020-04-17 18:58:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-04-17 18:58:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 552. [2020-04-17 18:58:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-04-17 18:58:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1836 transitions. [2020-04-17 18:58:20,484 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1836 transitions. Word has length 12 [2020-04-17 18:58:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:20,484 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 1836 transitions. [2020-04-17 18:58:20,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1836 transitions. [2020-04-17 18:58:20,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:58:20,486 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:20,486 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:20,487 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1066051238, now seen corresponding path program 1 times [2020-04-17 18:58:20,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:20,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798123915] [2020-04-17 18:58:20,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 18:58:20,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798123915] [2020-04-17 18:58:20,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:20,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:20,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595348530] [2020-04-17 18:58:20,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:20,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:20,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:20,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:20,511 INFO L87 Difference]: Start difference. First operand 552 states and 1836 transitions. Second operand 3 states. [2020-04-17 18:58:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:20,541 INFO L93 Difference]: Finished difference Result 756 states and 2485 transitions. [2020-04-17 18:58:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:20,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 18:58:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:20,548 INFO L225 Difference]: With dead ends: 756 [2020-04-17 18:58:20,548 INFO L226 Difference]: Without dead ends: 756 [2020-04-17 18:58:20,548 INFO L678 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 [2020-04-17 18:58:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-04-17 18:58:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 652. [2020-04-17 18:58:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-04-17 18:58:20,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2203 transitions. [2020-04-17 18:58:20,569 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2203 transitions. Word has length 14 [2020-04-17 18:58:20,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:20,570 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 2203 transitions. [2020-04-17 18:58:20,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:20,570 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2203 transitions. [2020-04-17 18:58:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:58:20,571 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:20,571 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:20,571 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 18:58:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:20,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1312017708, now seen corresponding path program 1 times [2020-04-17 18:58:20,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:20,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680123345] [2020-04-17 18:58:20,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:20,605 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:20,605 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:20,605 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:20,607 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-17 18:58:20,616 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,616 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,616 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,616 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,617 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,617 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,617 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,617 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,618 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,618 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,618 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,618 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,619 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,619 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,619 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,620 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,620 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,620 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,620 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,621 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,621 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,621 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,621 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,621 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,621 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,621 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,622 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,622 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,623 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,623 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,623 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,623 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,623 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,626 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,626 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,628 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,628 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,629 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,629 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,630 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,630 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,631 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,632 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,633 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,637 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,637 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,637 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:20,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-17 18:58:20,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:20,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:20,639 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:20,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:20,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:20,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:20,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:20,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:20,641 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 215 flow [2020-04-17 18:58:20,641 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-04-17 18:58:20,663 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-04-17 18:58:20,663 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-17 18:58:20,665 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. [2020-04-17 18:58:20,670 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-04-17 18:58:20,698 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-04-17 18:58:20,698 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-17 18:58:20,699 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. [2020-04-17 18:58:20,704 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4320 [2020-04-17 18:58:20,704 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:21,772 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6467 [2020-04-17 18:58:21,772 INFO L214 etLargeBlockEncoding]: Total number of compositions: 76 [2020-04-17 18:58:21,772 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 28 transitions, 101 flow [2020-04-17 18:58:22,238 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6484 states. [2020-04-17 18:58:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states. [2020-04-17 18:58:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 18:58:22,239 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:22,239 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 18:58:22,239 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]=== [2020-04-17 18:58:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:22,240 INFO L82 PathProgramCache]: Analyzing trace with hash 666270871, now seen corresponding path program 1 times [2020-04-17 18:58:22,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:22,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430289421] [2020-04-17 18:58:22,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:22,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430289421] [2020-04-17 18:58:22,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:22,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:22,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325457412] [2020-04-17 18:58:22,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:22,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:22,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:22,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:22,256 INFO L87 Difference]: Start difference. First operand 6484 states. Second operand 3 states. [2020-04-17 18:58:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:22,354 INFO L93 Difference]: Finished difference Result 7629 states and 32588 transitions. [2020-04-17 18:58:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:22,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 18:58:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:22,419 INFO L225 Difference]: With dead ends: 7629 [2020-04-17 18:58:22,420 INFO L226 Difference]: Without dead ends: 7629 [2020-04-17 18:58:22,420 INFO L678 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 [2020-04-17 18:58:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2020-04-17 18:58:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 6366. [2020-04-17 18:58:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6366 states. [2020-04-17 18:58:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 28029 transitions. [2020-04-17 18:58:22,879 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 28029 transitions. Word has length 5 [2020-04-17 18:58:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:22,879 INFO L479 AbstractCegarLoop]: Abstraction has 6366 states and 28029 transitions. [2020-04-17 18:58:22,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 28029 transitions. [2020-04-17 18:58:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:58:22,881 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:22,881 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:22,881 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]=== [2020-04-17 18:58:22,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:22,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1690072825, now seen corresponding path program 1 times [2020-04-17 18:58:22,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:22,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300042012] [2020-04-17 18:58:22,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:22,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300042012] [2020-04-17 18:58:22,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:22,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:22,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517355542] [2020-04-17 18:58:22,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:22,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:22,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:22,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:22,902 INFO L87 Difference]: Start difference. First operand 6366 states and 28029 transitions. Second operand 3 states. [2020-04-17 18:58:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:22,987 INFO L93 Difference]: Finished difference Result 9120 states and 39254 transitions. [2020-04-17 18:58:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:22,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:58:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:23,035 INFO L225 Difference]: With dead ends: 9120 [2020-04-17 18:58:23,035 INFO L226 Difference]: Without dead ends: 9120 [2020-04-17 18:58:23,036 INFO L678 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 [2020-04-17 18:58:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2020-04-17 18:58:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 7564. [2020-04-17 18:58:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7564 states. [2020-04-17 18:58:24,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7564 states to 7564 states and 33556 transitions. [2020-04-17 18:58:24,052 INFO L78 Accepts]: Start accepts. Automaton has 7564 states and 33556 transitions. Word has length 8 [2020-04-17 18:58:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:24,053 INFO L479 AbstractCegarLoop]: Abstraction has 7564 states and 33556 transitions. [2020-04-17 18:58:24,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 7564 states and 33556 transitions. [2020-04-17 18:58:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:24,053 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:24,054 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:24,054 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]=== [2020-04-17 18:58:24,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:24,054 INFO L82 PathProgramCache]: Analyzing trace with hash 868276956, now seen corresponding path program 1 times [2020-04-17 18:58:24,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:24,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506462449] [2020-04-17 18:58:24,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:24,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506462449] [2020-04-17 18:58:24,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:24,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:24,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454027463] [2020-04-17 18:58:24,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:24,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:24,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:24,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:24,080 INFO L87 Difference]: Start difference. First operand 7564 states and 33556 transitions. Second operand 4 states. [2020-04-17 18:58:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:24,157 INFO L93 Difference]: Finished difference Result 6008 states and 26302 transitions. [2020-04-17 18:58:24,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:24,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:24,181 INFO L225 Difference]: With dead ends: 6008 [2020-04-17 18:58:24,182 INFO L226 Difference]: Without dead ends: 6008 [2020-04-17 18:58:24,183 INFO L678 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 [2020-04-17 18:58:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6008 states. [2020-04-17 18:58:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6008 to 4771. [2020-04-17 18:58:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4771 states. [2020-04-17 18:58:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 20598 transitions. [2020-04-17 18:58:24,528 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 20598 transitions. Word has length 9 [2020-04-17 18:58:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:24,529 INFO L479 AbstractCegarLoop]: Abstraction has 4771 states and 20598 transitions. [2020-04-17 18:58:24,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 20598 transitions. [2020-04-17 18:58:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:24,529 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:24,529 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:24,530 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]=== [2020-04-17 18:58:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:24,530 INFO L82 PathProgramCache]: Analyzing trace with hash 852652394, now seen corresponding path program 1 times [2020-04-17 18:58:24,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:24,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118905948] [2020-04-17 18:58:24,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:24,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118905948] [2020-04-17 18:58:24,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:24,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:24,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450625509] [2020-04-17 18:58:24,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:24,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:24,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:24,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:24,550 INFO L87 Difference]: Start difference. First operand 4771 states and 20598 transitions. Second operand 4 states. [2020-04-17 18:58:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:24,606 INFO L93 Difference]: Finished difference Result 3827 states and 16326 transitions. [2020-04-17 18:58:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:24,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:24,623 INFO L225 Difference]: With dead ends: 3827 [2020-04-17 18:58:24,623 INFO L226 Difference]: Without dead ends: 3827 [2020-04-17 18:58:24,624 INFO L678 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 [2020-04-17 18:58:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2020-04-17 18:58:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2883. [2020-04-17 18:58:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2883 states. [2020-04-17 18:58:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 12054 transitions. [2020-04-17 18:58:24,753 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 12054 transitions. Word has length 9 [2020-04-17 18:58:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:24,753 INFO L479 AbstractCegarLoop]: Abstraction has 2883 states and 12054 transitions. [2020-04-17 18:58:24,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 12054 transitions. [2020-04-17 18:58:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:58:24,754 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:24,754 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:24,754 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]=== [2020-04-17 18:58:24,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:24,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1095418705, now seen corresponding path program 1 times [2020-04-17 18:58:24,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:24,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120295437] [2020-04-17 18:58:24,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:58:24,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120295437] [2020-04-17 18:58:24,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:24,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:24,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319930140] [2020-04-17 18:58:24,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:24,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:24,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:24,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:24,780 INFO L87 Difference]: Start difference. First operand 2883 states and 12054 transitions. Second operand 3 states. [2020-04-17 18:58:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:24,830 INFO L93 Difference]: Finished difference Result 4275 states and 17545 transitions. [2020-04-17 18:58:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:24,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 18:58:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:24,847 INFO L225 Difference]: With dead ends: 4275 [2020-04-17 18:58:24,847 INFO L226 Difference]: Without dead ends: 4275 [2020-04-17 18:58:24,847 INFO L678 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 [2020-04-17 18:58:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2020-04-17 18:58:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 3574. [2020-04-17 18:58:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-04-17 18:58:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 15125 transitions. [2020-04-17 18:58:25,019 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 15125 transitions. Word has length 11 [2020-04-17 18:58:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:25,020 INFO L479 AbstractCegarLoop]: Abstraction has 3574 states and 15125 transitions. [2020-04-17 18:58:25,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 15125 transitions. [2020-04-17 18:58:25,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:58:25,023 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:25,023 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:25,023 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]=== [2020-04-17 18:58:25,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:25,024 INFO L82 PathProgramCache]: Analyzing trace with hash 401760447, now seen corresponding path program 1 times [2020-04-17 18:58:25,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:25,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415615286] [2020-04-17 18:58:25,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:58:25,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415615286] [2020-04-17 18:58:25,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:25,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:25,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473090340] [2020-04-17 18:58:25,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:25,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:25,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:25,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:25,056 INFO L87 Difference]: Start difference. First operand 3574 states and 15125 transitions. Second operand 4 states. [2020-04-17 18:58:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:25,105 INFO L93 Difference]: Finished difference Result 2873 states and 12004 transitions. [2020-04-17 18:58:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:25,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 18:58:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:25,120 INFO L225 Difference]: With dead ends: 2873 [2020-04-17 18:58:25,120 INFO L226 Difference]: Without dead ends: 2873 [2020-04-17 18:58:25,121 INFO L678 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 [2020-04-17 18:58:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-04-17 18:58:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2172. [2020-04-17 18:58:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2172 states. [2020-04-17 18:58:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8883 transitions. [2020-04-17 18:58:25,293 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8883 transitions. Word has length 12 [2020-04-17 18:58:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:25,294 INFO L479 AbstractCegarLoop]: Abstraction has 2172 states and 8883 transitions. [2020-04-17 18:58:25,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8883 transitions. [2020-04-17 18:58:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:58:25,297 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:25,297 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:25,297 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]=== [2020-04-17 18:58:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:25,297 INFO L82 PathProgramCache]: Analyzing trace with hash -596519610, now seen corresponding path program 1 times [2020-04-17 18:58:25,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:25,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589028855] [2020-04-17 18:58:25,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 18:58:25,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589028855] [2020-04-17 18:58:25,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:25,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:25,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625167840] [2020-04-17 18:58:25,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:25,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:25,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:25,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:25,323 INFO L87 Difference]: Start difference. First operand 2172 states and 8883 transitions. Second operand 3 states. [2020-04-17 18:58:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:25,365 INFO L93 Difference]: Finished difference Result 3177 states and 12799 transitions. [2020-04-17 18:58:25,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:25,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 18:58:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:25,378 INFO L225 Difference]: With dead ends: 3177 [2020-04-17 18:58:25,378 INFO L226 Difference]: Without dead ends: 3177 [2020-04-17 18:58:25,379 INFO L678 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 [2020-04-17 18:58:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2020-04-17 18:58:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 2671. [2020-04-17 18:58:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2671 states. [2020-04-17 18:58:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 11075 transitions. [2020-04-17 18:58:25,482 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 11075 transitions. Word has length 14 [2020-04-17 18:58:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:25,483 INFO L479 AbstractCegarLoop]: Abstraction has 2671 states and 11075 transitions. [2020-04-17 18:58:25,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 11075 transitions. [2020-04-17 18:58:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:58:25,484 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:25,484 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:25,484 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]=== [2020-04-17 18:58:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:25,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1312236012, now seen corresponding path program 1 times [2020-04-17 18:58:25,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:25,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801334343] [2020-04-17 18:58:25,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 18:58:25,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801334343] [2020-04-17 18:58:25,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:25,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:25,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19624185] [2020-04-17 18:58:25,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:25,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:25,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:25,522 INFO L87 Difference]: Start difference. First operand 2671 states and 11075 transitions. Second operand 4 states. [2020-04-17 18:58:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:25,563 INFO L93 Difference]: Finished difference Result 2165 states and 8845 transitions. [2020-04-17 18:58:25,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:25,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 18:58:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:25,572 INFO L225 Difference]: With dead ends: 2165 [2020-04-17 18:58:25,572 INFO L226 Difference]: Without dead ends: 2165 [2020-04-17 18:58:25,573 INFO L678 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 [2020-04-17 18:58:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-04-17 18:58:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1659. [2020-04-17 18:58:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-04-17 18:58:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 6615 transitions. [2020-04-17 18:58:25,628 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 6615 transitions. Word has length 15 [2020-04-17 18:58:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:25,629 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 6615 transitions. [2020-04-17 18:58:25,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:25,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 6615 transitions. [2020-04-17 18:58:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:58:25,630 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:25,630 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:25,630 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]=== [2020-04-17 18:58:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:25,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1514810044, now seen corresponding path program 1 times [2020-04-17 18:58:25,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:25,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704497967] [2020-04-17 18:58:25,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 18:58:25,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704497967] [2020-04-17 18:58:25,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:25,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:25,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553198520] [2020-04-17 18:58:25,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:25,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:25,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:25,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:25,652 INFO L87 Difference]: Start difference. First operand 1659 states and 6615 transitions. Second operand 3 states. [2020-04-17 18:58:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:25,685 INFO L93 Difference]: Finished difference Result 2295 states and 9088 transitions. [2020-04-17 18:58:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:25,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 18:58:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:25,690 INFO L225 Difference]: With dead ends: 2295 [2020-04-17 18:58:25,690 INFO L226 Difference]: Without dead ends: 2295 [2020-04-17 18:58:25,691 INFO L678 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 [2020-04-17 18:58:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-04-17 18:58:25,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1975. [2020-04-17 18:58:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-04-17 18:58:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 8000 transitions. [2020-04-17 18:58:25,741 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 8000 transitions. Word has length 17 [2020-04-17 18:58:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:25,741 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 8000 transitions. [2020-04-17 18:58:25,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 8000 transitions. [2020-04-17 18:58:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:58:25,743 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:25,743 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:25,744 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]=== [2020-04-17 18:58:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash -285527274, now seen corresponding path program 1 times [2020-04-17 18:58:25,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:25,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758382237] [2020-04-17 18:58:25,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 18:58:25,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758382237] [2020-04-17 18:58:25,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:25,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:25,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11809341] [2020-04-17 18:58:25,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:25,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:25,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:25,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:25,771 INFO L87 Difference]: Start difference. First operand 1975 states and 8000 transitions. Second operand 4 states. [2020-04-17 18:58:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:25,823 INFO L93 Difference]: Finished difference Result 1655 states and 6592 transitions. [2020-04-17 18:58:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:25,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 18:58:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:25,830 INFO L225 Difference]: With dead ends: 1655 [2020-04-17 18:58:25,831 INFO L226 Difference]: Without dead ends: 1655 [2020-04-17 18:58:25,831 INFO L678 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 [2020-04-17 18:58:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-04-17 18:58:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1335. [2020-04-17 18:58:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-04-17 18:58:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 5184 transitions. [2020-04-17 18:58:25,892 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 5184 transitions. Word has length 18 [2020-04-17 18:58:25,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:25,892 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 5184 transitions. [2020-04-17 18:58:25,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:25,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 5184 transitions. [2020-04-17 18:58:25,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:58:25,895 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:25,895 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:25,896 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]=== [2020-04-17 18:58:25,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:25,896 INFO L82 PathProgramCache]: Analyzing trace with hash -285687237, now seen corresponding path program 1 times [2020-04-17 18:58:25,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:25,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211613296] [2020-04-17 18:58:25,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:25,919 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:25,919 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:25,920 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:25,921 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-17 18:58:25,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,938 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,938 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,939 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,940 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,940 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,940 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,940 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,941 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,941 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,941 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,941 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,941 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,942 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,942 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,942 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,942 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,943 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,943 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,943 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,944 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,944 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,945 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,945 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,945 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,945 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,946 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,946 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,946 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,946 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,946 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,947 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,947 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,947 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,947 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,947 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,948 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,948 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,948 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,948 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,949 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,949 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,949 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,949 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,949 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,950 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,950 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,951 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,951 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,951 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,951 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,951 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,952 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,952 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,952 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,952 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,952 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,953 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,953 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,954 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,954 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,954 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,954 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,955 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,955 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,955 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,955 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,955 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,956 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,956 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,956 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,956 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,956 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,957 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,957 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,957 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,959 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,959 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,960 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,960 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,962 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,962 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,962 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,963 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,963 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,963 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,964 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,964 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,964 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,964 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,964 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,965 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,966 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,966 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,966 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,968 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,968 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:25,969 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-17 18:58:25,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:25,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:25,969 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:25,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:25,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:25,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:25,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:25,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:25,972 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 98 transitions, 256 flow [2020-04-17 18:58:25,972 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-04-17 18:58:25,993 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-04-17 18:58:25,994 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-17 18:58:25,996 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. [2020-04-17 18:58:26,006 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-04-17 18:58:26,024 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-04-17 18:58:26,025 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-17 18:58:26,027 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. [2020-04-17 18:58:26,037 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6120 [2020-04-17 18:58:26,037 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:27,371 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10327 [2020-04-17 18:58:27,372 INFO L214 etLargeBlockEncoding]: Total number of compositions: 89 [2020-04-17 18:58:27,372 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 126 flow [2020-04-17 18:58:31,011 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 25940 states. [2020-04-17 18:58:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 25940 states. [2020-04-17 18:58:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 18:58:31,012 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:31,012 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 18:58:31,012 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]=== [2020-04-17 18:58:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:31,013 INFO L82 PathProgramCache]: Analyzing trace with hash 862156483, now seen corresponding path program 1 times [2020-04-17 18:58:31,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:31,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129046543] [2020-04-17 18:58:31,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:58:31,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129046543] [2020-04-17 18:58:31,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:31,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:31,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567534275] [2020-04-17 18:58:31,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:31,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:31,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:31,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:31,029 INFO L87 Difference]: Start difference. First operand 25940 states. Second operand 3 states. [2020-04-17 18:58:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:31,438 INFO L93 Difference]: Finished difference Result 30660 states and 153869 transitions. [2020-04-17 18:58:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:31,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 18:58:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:31,540 INFO L225 Difference]: With dead ends: 30660 [2020-04-17 18:58:31,540 INFO L226 Difference]: Without dead ends: 30660 [2020-04-17 18:58:31,540 INFO L678 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 [2020-04-17 18:58:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30660 states. [2020-04-17 18:58:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30660 to 25560. [2020-04-17 18:58:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25560 states. [2020-04-17 18:58:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25560 states to 25560 states and 131665 transitions. [2020-04-17 18:58:34,712 INFO L78 Accepts]: Start accepts. Automaton has 25560 states and 131665 transitions. Word has length 5 [2020-04-17 18:58:34,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:34,712 INFO L479 AbstractCegarLoop]: Abstraction has 25560 states and 131665 transitions. [2020-04-17 18:58:34,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 25560 states and 131665 transitions. [2020-04-17 18:58:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:58:34,712 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:34,713 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:34,713 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]=== [2020-04-17 18:58:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash 422134040, now seen corresponding path program 1 times [2020-04-17 18:58:34,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:34,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855234048] [2020-04-17 18:58:34,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:34,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855234048] [2020-04-17 18:58:34,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:34,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:34,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794854968] [2020-04-17 18:58:34,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:34,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:34,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:34,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:34,731 INFO L87 Difference]: Start difference. First operand 25560 states and 131665 transitions. Second operand 3 states. [2020-04-17 18:58:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:34,996 INFO L93 Difference]: Finished difference Result 36927 states and 186525 transitions. [2020-04-17 18:58:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:34,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:58:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:35,126 INFO L225 Difference]: With dead ends: 36927 [2020-04-17 18:58:35,126 INFO L226 Difference]: Without dead ends: 36927 [2020-04-17 18:58:35,127 INFO L678 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 [2020-04-17 18:58:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36927 states. [2020-04-17 18:58:38,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36927 to 30580. [2020-04-17 18:58:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30580 states. [2020-04-17 18:58:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30580 states to 30580 states and 158564 transitions. [2020-04-17 18:58:38,613 INFO L78 Accepts]: Start accepts. Automaton has 30580 states and 158564 transitions. Word has length 8 [2020-04-17 18:58:38,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:38,613 INFO L479 AbstractCegarLoop]: Abstraction has 30580 states and 158564 transitions. [2020-04-17 18:58:38,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 30580 states and 158564 transitions. [2020-04-17 18:58:38,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:38,614 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:38,614 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:38,614 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]=== [2020-04-17 18:58:38,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:38,614 INFO L82 PathProgramCache]: Analyzing trace with hash 203971322, now seen corresponding path program 1 times [2020-04-17 18:58:38,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:38,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498586951] [2020-04-17 18:58:38,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-17 18:58:38,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498586951] [2020-04-17 18:58:38,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:38,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:38,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521229426] [2020-04-17 18:58:38,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:38,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:38,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:38,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:38,633 INFO L87 Difference]: Start difference. First operand 30580 states and 158564 transitions. Second operand 4 states. [2020-04-17 18:58:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:38,895 INFO L93 Difference]: Finished difference Result 24233 states and 124256 transitions. [2020-04-17 18:58:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:38,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:39,013 INFO L225 Difference]: With dead ends: 24233 [2020-04-17 18:58:39,013 INFO L226 Difference]: Without dead ends: 24233 [2020-04-17 18:58:39,014 INFO L678 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 [2020-04-17 18:58:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24233 states. [2020-04-17 18:58:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24233 to 19165. [2020-04-17 18:58:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19165 states. [2020-04-17 18:58:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19165 states to 19165 states and 97114 transitions. [2020-04-17 18:58:40,487 INFO L78 Accepts]: Start accepts. Automaton has 19165 states and 97114 transitions. Word has length 9 [2020-04-17 18:58:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:40,487 INFO L479 AbstractCegarLoop]: Abstraction has 19165 states and 97114 transitions. [2020-04-17 18:58:40,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 19165 states and 97114 transitions. [2020-04-17 18:58:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:58:40,487 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:40,487 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:40,488 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]=== [2020-04-17 18:58:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash 201256629, now seen corresponding path program 1 times [2020-04-17 18:58:40,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:40,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288223209] [2020-04-17 18:58:40,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:58:40,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288223209] [2020-04-17 18:58:40,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:40,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:40,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670297258] [2020-04-17 18:58:40,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:40,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:40,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:40,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:40,506 INFO L87 Difference]: Start difference. First operand 19165 states and 97114 transitions. Second operand 4 states. [2020-04-17 18:58:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:40,653 INFO L93 Difference]: Finished difference Result 15344 states and 76976 transitions. [2020-04-17 18:58:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:40,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 18:58:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:40,716 INFO L225 Difference]: With dead ends: 15344 [2020-04-17 18:58:40,717 INFO L226 Difference]: Without dead ends: 15344 [2020-04-17 18:58:40,717 INFO L678 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 [2020-04-17 18:58:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15344 states. [2020-04-17 18:58:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15344 to 11523. [2020-04-17 18:58:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11523 states. [2020-04-17 18:58:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 56838 transitions. [2020-04-17 18:58:42,474 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 56838 transitions. Word has length 9 [2020-04-17 18:58:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:42,474 INFO L479 AbstractCegarLoop]: Abstraction has 11523 states and 56838 transitions. [2020-04-17 18:58:42,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 56838 transitions. [2020-04-17 18:58:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:58:42,474 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:42,475 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:42,475 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]=== [2020-04-17 18:58:42,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:42,475 INFO L82 PathProgramCache]: Analyzing trace with hash -40974610, now seen corresponding path program 1 times [2020-04-17 18:58:42,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:42,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191450198] [2020-04-17 18:58:42,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:58:42,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191450198] [2020-04-17 18:58:42,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:42,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:42,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201726985] [2020-04-17 18:58:42,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:42,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:42,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:42,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:42,489 INFO L87 Difference]: Start difference. First operand 11523 states and 56838 transitions. Second operand 3 states. [2020-04-17 18:58:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:42,604 INFO L93 Difference]: Finished difference Result 17226 states and 83578 transitions. [2020-04-17 18:58:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:42,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 18:58:42,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:42,655 INFO L225 Difference]: With dead ends: 17226 [2020-04-17 18:58:42,655 INFO L226 Difference]: Without dead ends: 17226 [2020-04-17 18:58:42,655 INFO L678 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 [2020-04-17 18:58:42,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17226 states. [2020-04-17 18:58:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17226 to 14368. [2020-04-17 18:58:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14368 states. [2020-04-17 18:58:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14368 states to 14368 states and 71601 transitions. [2020-04-17 18:58:43,261 INFO L78 Accepts]: Start accepts. Automaton has 14368 states and 71601 transitions. Word has length 11 [2020-04-17 18:58:43,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:43,261 INFO L479 AbstractCegarLoop]: Abstraction has 14368 states and 71601 transitions. [2020-04-17 18:58:43,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 14368 states and 71601 transitions. [2020-04-17 18:58:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:58:43,262 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:43,262 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:43,262 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]=== [2020-04-17 18:58:43,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:43,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1270210238, now seen corresponding path program 1 times [2020-04-17 18:58:43,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:43,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988285239] [2020-04-17 18:58:43,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 18:58:43,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988285239] [2020-04-17 18:58:43,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:43,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:43,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555424616] [2020-04-17 18:58:43,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:43,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:43,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:43,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:43,280 INFO L87 Difference]: Start difference. First operand 14368 states and 71601 transitions. Second operand 4 states. [2020-04-17 18:58:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:43,369 INFO L93 Difference]: Finished difference Result 11510 states and 56766 transitions. [2020-04-17 18:58:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:43,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 18:58:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:43,403 INFO L225 Difference]: With dead ends: 11510 [2020-04-17 18:58:43,404 INFO L226 Difference]: Without dead ends: 11510 [2020-04-17 18:58:43,404 INFO L678 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 [2020-04-17 18:58:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-04-17 18:58:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 8652. [2020-04-17 18:58:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2020-04-17 18:58:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 41931 transitions. [2020-04-17 18:58:43,989 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 41931 transitions. Word has length 12 [2020-04-17 18:58:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:43,989 INFO L479 AbstractCegarLoop]: Abstraction has 8652 states and 41931 transitions. [2020-04-17 18:58:43,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 41931 transitions. [2020-04-17 18:58:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:58:43,990 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:43,990 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:43,990 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]=== [2020-04-17 18:58:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:43,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1064251902, now seen corresponding path program 1 times [2020-04-17 18:58:43,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:43,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922924291] [2020-04-17 18:58:43,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 18:58:44,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922924291] [2020-04-17 18:58:44,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:44,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:44,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14670796] [2020-04-17 18:58:44,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:44,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:44,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:44,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:44,010 INFO L87 Difference]: Start difference. First operand 8652 states and 41931 transitions. Second operand 3 states. [2020-04-17 18:58:44,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:44,100 INFO L93 Difference]: Finished difference Result 12888 states and 61498 transitions. [2020-04-17 18:58:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:44,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 18:58:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:44,136 INFO L225 Difference]: With dead ends: 12888 [2020-04-17 18:58:44,136 INFO L226 Difference]: Without dead ends: 12888 [2020-04-17 18:58:44,138 INFO L678 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 [2020-04-17 18:58:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12888 states. [2020-04-17 18:58:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12888 to 10765. [2020-04-17 18:58:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10765 states. [2020-04-17 18:58:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 52746 transitions. [2020-04-17 18:58:44,519 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 52746 transitions. Word has length 14 [2020-04-17 18:58:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:44,519 INFO L479 AbstractCegarLoop]: Abstraction has 10765 states and 52746 transitions. [2020-04-17 18:58:44,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 52746 transitions. [2020-04-17 18:58:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:58:44,520 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:44,520 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:44,521 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]=== [2020-04-17 18:58:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1367932408, now seen corresponding path program 1 times [2020-04-17 18:58:44,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:44,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614461003] [2020-04-17 18:58:44,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 18:58:44,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614461003] [2020-04-17 18:58:44,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:44,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:44,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381574104] [2020-04-17 18:58:44,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:44,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:44,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:44,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:44,546 INFO L87 Difference]: Start difference. First operand 10765 states and 52746 transitions. Second operand 4 states. [2020-04-17 18:58:44,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:44,634 INFO L93 Difference]: Finished difference Result 8642 states and 41871 transitions. [2020-04-17 18:58:44,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:44,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 18:58:44,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:44,664 INFO L225 Difference]: With dead ends: 8642 [2020-04-17 18:58:44,664 INFO L226 Difference]: Without dead ends: 8642 [2020-04-17 18:58:44,665 INFO L678 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 [2020-04-17 18:58:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8642 states. [2020-04-17 18:58:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8642 to 6519. [2020-04-17 18:58:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6519 states. [2020-04-17 18:58:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6519 states to 6519 states and 30996 transitions. [2020-04-17 18:58:44,896 INFO L78 Accepts]: Start accepts. Automaton has 6519 states and 30996 transitions. Word has length 15 [2020-04-17 18:58:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:44,897 INFO L479 AbstractCegarLoop]: Abstraction has 6519 states and 30996 transitions. [2020-04-17 18:58:44,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:44,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6519 states and 30996 transitions. [2020-04-17 18:58:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:58:44,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:44,898 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:44,898 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]=== [2020-04-17 18:58:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash 152749525, now seen corresponding path program 1 times [2020-04-17 18:58:44,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:44,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58298095] [2020-04-17 18:58:44,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 18:58:44,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58298095] [2020-04-17 18:58:44,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:44,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:44,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044751176] [2020-04-17 18:58:44,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:44,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:44,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:44,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:44,922 INFO L87 Difference]: Start difference. First operand 6519 states and 30996 transitions. Second operand 3 states. [2020-04-17 18:58:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:45,011 INFO L93 Difference]: Finished difference Result 9576 states and 44989 transitions. [2020-04-17 18:58:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:45,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 18:58:45,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:45,033 INFO L225 Difference]: With dead ends: 9576 [2020-04-17 18:58:45,034 INFO L226 Difference]: Without dead ends: 9576 [2020-04-17 18:58:45,034 INFO L678 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 [2020-04-17 18:58:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2020-04-17 18:58:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 8044. [2020-04-17 18:58:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8044 states. [2020-04-17 18:58:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 38736 transitions. [2020-04-17 18:58:45,451 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 38736 transitions. Word has length 17 [2020-04-17 18:58:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:45,451 INFO L479 AbstractCegarLoop]: Abstraction has 8044 states and 38736 transitions. [2020-04-17 18:58:45,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 38736 transitions. [2020-04-17 18:58:45,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:58:45,455 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:45,455 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:45,455 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]=== [2020-04-17 18:58:45,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:45,455 INFO L82 PathProgramCache]: Analyzing trace with hash 440270196, now seen corresponding path program 1 times [2020-04-17 18:58:45,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:45,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354824678] [2020-04-17 18:58:45,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 18:58:45,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354824678] [2020-04-17 18:58:45,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:45,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:45,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499420722] [2020-04-17 18:58:45,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:45,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:45,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:45,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:45,479 INFO L87 Difference]: Start difference. First operand 8044 states and 38736 transitions. Second operand 4 states. [2020-04-17 18:58:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:45,558 INFO L93 Difference]: Finished difference Result 6512 states and 30951 transitions. [2020-04-17 18:58:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:45,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 18:58:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:45,577 INFO L225 Difference]: With dead ends: 6512 [2020-04-17 18:58:45,577 INFO L226 Difference]: Without dead ends: 6512 [2020-04-17 18:58:45,577 INFO L678 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 [2020-04-17 18:58:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2020-04-17 18:58:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 4980. [2020-04-17 18:58:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4980 states. [2020-04-17 18:58:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 23166 transitions. [2020-04-17 18:58:45,858 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 23166 transitions. Word has length 18 [2020-04-17 18:58:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:45,858 INFO L479 AbstractCegarLoop]: Abstraction has 4980 states and 23166 transitions. [2020-04-17 18:58:45,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 23166 transitions. [2020-04-17 18:58:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 18:58:45,863 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:45,863 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:45,863 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]=== [2020-04-17 18:58:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2026385382, now seen corresponding path program 1 times [2020-04-17 18:58:45,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:45,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517803927] [2020-04-17 18:58:45,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-04-17 18:58:45,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517803927] [2020-04-17 18:58:45,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:45,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:58:45,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890483263] [2020-04-17 18:58:45,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:58:45,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:45,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:58:45,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:58:45,883 INFO L87 Difference]: Start difference. First operand 4980 states and 23166 transitions. Second operand 3 states. [2020-04-17 18:58:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:45,963 INFO L93 Difference]: Finished difference Result 6912 states and 31999 transitions. [2020-04-17 18:58:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:45,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-04-17 18:58:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:45,992 INFO L225 Difference]: With dead ends: 6912 [2020-04-17 18:58:45,992 INFO L226 Difference]: Without dead ends: 6912 [2020-04-17 18:58:45,993 INFO L678 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 [2020-04-17 18:58:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2020-04-17 18:58:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 5944. [2020-04-17 18:58:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2020-04-17 18:58:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 28053 transitions. [2020-04-17 18:58:46,246 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 28053 transitions. Word has length 20 [2020-04-17 18:58:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:46,246 INFO L479 AbstractCegarLoop]: Abstraction has 5944 states and 28053 transitions. [2020-04-17 18:58:46,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:58:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 28053 transitions. [2020-04-17 18:58:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 18:58:46,250 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:46,250 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:46,251 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]=== [2020-04-17 18:58:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:46,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1606559931, now seen corresponding path program 1 times [2020-04-17 18:58:46,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:46,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281799681] [2020-04-17 18:58:46,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:58:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-04-17 18:58:46,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281799681] [2020-04-17 18:58:46,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:58:46,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:58:46,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961900702] [2020-04-17 18:58:46,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:58:46,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:58:46,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:58:46,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:58:46,285 INFO L87 Difference]: Start difference. First operand 5944 states and 28053 transitions. Second operand 4 states. [2020-04-17 18:58:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:58:46,345 INFO L93 Difference]: Finished difference Result 4976 states and 23139 transitions. [2020-04-17 18:58:46,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:58:46,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-04-17 18:58:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:58:46,361 INFO L225 Difference]: With dead ends: 4976 [2020-04-17 18:58:46,362 INFO L226 Difference]: Without dead ends: 4976 [2020-04-17 18:58:46,362 INFO L678 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 [2020-04-17 18:58:46,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2020-04-17 18:58:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4008. [2020-04-17 18:58:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2020-04-17 18:58:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 18225 transitions. [2020-04-17 18:58:46,484 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 18225 transitions. Word has length 21 [2020-04-17 18:58:46,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:58:46,484 INFO L479 AbstractCegarLoop]: Abstraction has 4008 states and 18225 transitions. [2020-04-17 18:58:46,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:58:46,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 18225 transitions. [2020-04-17 18:58:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 18:58:46,488 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:58:46,488 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:58:46,489 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]=== [2020-04-17 18:58:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:58:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1606739912, now seen corresponding path program 1 times [2020-04-17 18:58:46,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:58:46,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540713658] [2020-04-17 18:58:46,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:58:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 18:58:46,505 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 18:58:46,505 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 18:58:46,506 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 18:58:46,506 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-04-17 18:58:46,515 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,516 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,516 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,518 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,519 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,519 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,519 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,519 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,519 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,520 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,520 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,521 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,521 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,521 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,521 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,521 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,522 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,522 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,522 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,522 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,522 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,522 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,522 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,523 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,523 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,523 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,523 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,523 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,523 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,523 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,525 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,525 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,525 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,525 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,527 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,527 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,527 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,527 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,527 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,527 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,527 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,529 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,529 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,530 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,531 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,531 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,532 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,533 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,533 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,533 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,533 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,534 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,534 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,535 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,535 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,535 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,535 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,535 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,535 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,536 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,537 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,537 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,537 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,537 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,537 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,538 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,538 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,538 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,539 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,539 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,539 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,540 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,540 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,540 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,540 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,540 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,541 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:58:46,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-04-17 18:58:46,542 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:58:46,542 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:58:46,542 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:58:46,542 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:58:46,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:58:46,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:58:46,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:58:46,543 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:58:46,544 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 111 transitions, 299 flow [2020-04-17 18:58:46,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-04-17 18:58:46,562 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-04-17 18:58:46,562 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-04-17 18:58:46,564 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. [2020-04-17 18:58:46,573 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-04-17 18:58:46,590 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-04-17 18:58:46,591 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-04-17 18:58:46,592 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. [2020-04-17 18:58:46,598 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 8232 [2020-04-17 18:58:46,598 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:58:47,876 INFO L206 etLargeBlockEncoding]: Checked pairs total: 13237 [2020-04-17 18:58:47,876 INFO L214 etLargeBlockEncoding]: Total number of compositions: 95 [2020-04-17 18:58:47,877 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 34 transitions, 145 flow [2020-04-17 18:59:23,428 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 103764 states. [2020-04-17 18:59:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 103764 states. [2020-04-17 18:59:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 18:59:23,429 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:59:23,429 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 18:59:23,429 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]=== [2020-04-17 18:59:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:59:23,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1079248743, now seen corresponding path program 1 times [2020-04-17 18:59:23,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:59:23,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706844596] [2020-04-17 18:59:23,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:59:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:59:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:59:23,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706844596] [2020-04-17 18:59:23,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:59:23,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:59:23,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997417257] [2020-04-17 18:59:23,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:59:23,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:59:23,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:59:23,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:23,441 INFO L87 Difference]: Start difference. First operand 103764 states. Second operand 3 states. [2020-04-17 18:59:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:59:24,217 INFO L93 Difference]: Finished difference Result 122811 states and 708293 transitions. [2020-04-17 18:59:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:59:24,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 18:59:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:59:28,936 INFO L225 Difference]: With dead ends: 122811 [2020-04-17 18:59:28,937 INFO L226 Difference]: Without dead ends: 122811 [2020-04-17 18:59:28,937 INFO L678 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 [2020-04-17 18:59:38,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122811 states. [2020-04-17 18:59:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122811 to 102354. [2020-04-17 18:59:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102354 states. [2020-04-17 18:59:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102354 states to 102354 states and 603935 transitions. [2020-04-17 18:59:41,302 INFO L78 Accepts]: Start accepts. Automaton has 102354 states and 603935 transitions. Word has length 5 [2020-04-17 18:59:41,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:59:41,302 INFO L479 AbstractCegarLoop]: Abstraction has 102354 states and 603935 transitions. [2020-04-17 18:59:41,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:59:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 102354 states and 603935 transitions. [2020-04-17 18:59:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:59:41,302 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:59:41,302 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-17 18:59:41,303 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]=== [2020-04-17 18:59:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:59:41,303 INFO L82 PathProgramCache]: Analyzing trace with hash -423468189, now seen corresponding path program 1 times [2020-04-17 18:59:41,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:59:41,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759920456] [2020-04-17 18:59:41,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:59:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:59:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 18:59:41,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759920456] [2020-04-17 18:59:41,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:59:41,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:59:41,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316325442] [2020-04-17 18:59:41,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:59:41,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:59:41,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:59:41,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:59:41,314 INFO L87 Difference]: Start difference. First operand 102354 states and 603935 transitions. Second operand 3 states. [2020-04-17 18:59:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:59:48,700 INFO L93 Difference]: Finished difference Result 148254 states and 859795 transitions. [2020-04-17 18:59:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:59:48,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:59:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:59:49,270 INFO L225 Difference]: With dead ends: 148254 [2020-04-17 18:59:49,270 INFO L226 Difference]: Without dead ends: 148254 [2020-04-17 18:59:49,270 INFO L678 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 [2020-04-17 18:59:59,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148254 states. [2020-04-17 19:00:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148254 to 122716. [2020-04-17 19:00:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122716 states. [2020-04-17 19:00:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122716 states to 122716 states and 728220 transitions. [2020-04-17 19:00:03,219 INFO L78 Accepts]: Start accepts. Automaton has 122716 states and 728220 transitions. Word has length 8 [2020-04-17 19:00:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:03,219 INFO L479 AbstractCegarLoop]: Abstraction has 122716 states and 728220 transitions. [2020-04-17 19:00:03,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 19:00:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 122716 states and 728220 transitions. [2020-04-17 19:00:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 19:00:03,219 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:03,219 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:03,219 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]=== [2020-04-17 19:00:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:03,220 INFO L82 PathProgramCache]: Analyzing trace with hash -242594376, now seen corresponding path program 1 times [2020-04-17 19:00:03,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:03,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470529718] [2020-04-17 19:00:03,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 19:00:03,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470529718] [2020-04-17 19:00:03,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:03,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 19:00:03,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506898994] [2020-04-17 19:00:03,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 19:00:03,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:03,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 19:00:03,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 19:00:03,259 INFO L87 Difference]: Start difference. First operand 122716 states and 728220 transitions. Second operand 4 states. [2020-04-17 19:00:03,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:03,878 INFO L93 Difference]: Finished difference Result 97178 states and 571107 transitions. [2020-04-17 19:00:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:03,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 19:00:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:04,237 INFO L225 Difference]: With dead ends: 97178 [2020-04-17 19:00:04,237 INFO L226 Difference]: Without dead ends: 97178 [2020-04-17 19:00:04,237 INFO L678 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 [2020-04-17 19:00:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97178 states. [2020-04-17 19:00:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97178 to 76759. [2020-04-17 19:00:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76759 states. [2020-04-17 19:00:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76759 states to 76759 states and 446504 transitions. [2020-04-17 19:00:17,873 INFO L78 Accepts]: Start accepts. Automaton has 76759 states and 446504 transitions. Word has length 9 [2020-04-17 19:00:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:17,873 INFO L479 AbstractCegarLoop]: Abstraction has 76759 states and 446504 transitions. [2020-04-17 19:00:17,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 19:00:17,873 INFO L276 IsEmpty]: Start isEmpty. Operand 76759 states and 446504 transitions. [2020-04-17 19:00:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 19:00:17,873 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:17,873 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:17,874 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]=== [2020-04-17 19:00:17,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:17,874 INFO L82 PathProgramCache]: Analyzing trace with hash -242609250, now seen corresponding path program 1 times [2020-04-17 19:00:17,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:17,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261407423] [2020-04-17 19:00:17,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-17 19:00:17,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261407423] [2020-04-17 19:00:17,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:17,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 19:00:17,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647920925] [2020-04-17 19:00:17,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 19:00:17,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:17,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 19:00:17,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 19:00:17,895 INFO L87 Difference]: Start difference. First operand 76759 states and 446504 transitions. Second operand 4 states. [2020-04-17 19:00:19,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:19,277 INFO L93 Difference]: Finished difference Result 61421 states and 354199 transitions. [2020-04-17 19:00:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:19,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 19:00:19,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:19,500 INFO L225 Difference]: With dead ends: 61421 [2020-04-17 19:00:19,500 INFO L226 Difference]: Without dead ends: 61421 [2020-04-17 19:00:19,500 INFO L678 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 [2020-04-17 19:00:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61421 states. [2020-04-17 19:00:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61421 to 46083. [2020-04-17 19:00:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46083 states. [2020-04-17 19:00:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46083 states to 46083 states and 261894 transitions. [2020-04-17 19:00:28,636 INFO L78 Accepts]: Start accepts. Automaton has 46083 states and 261894 transitions. Word has length 9 [2020-04-17 19:00:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:28,636 INFO L479 AbstractCegarLoop]: Abstraction has 46083 states and 261894 transitions. [2020-04-17 19:00:28,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 19:00:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 46083 states and 261894 transitions. [2020-04-17 19:00:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 19:00:28,637 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:28,637 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:28,637 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]=== [2020-04-17 19:00:28,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:28,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1404864702, now seen corresponding path program 1 times [2020-04-17 19:00:28,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:28,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549656856] [2020-04-17 19:00:28,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 19:00:28,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549656856] [2020-04-17 19:00:28,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:28,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 19:00:28,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937501525] [2020-04-17 19:00:28,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 19:00:28,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:28,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 19:00:28,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 19:00:28,651 INFO L87 Difference]: Start difference. First operand 46083 states and 261894 transitions. Second operand 3 states. [2020-04-17 19:00:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:29,582 INFO L93 Difference]: Finished difference Result 69057 states and 386770 transitions. [2020-04-17 19:00:29,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:29,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 19:00:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:29,819 INFO L225 Difference]: With dead ends: 69057 [2020-04-17 19:00:29,819 INFO L226 Difference]: Without dead ends: 69057 [2020-04-17 19:00:29,820 INFO L678 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 [2020-04-17 19:00:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69057 states. [2020-04-17 19:00:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69057 to 57562. [2020-04-17 19:00:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57562 states. [2020-04-17 19:00:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57562 states to 57562 states and 330031 transitions. [2020-04-17 19:00:37,675 INFO L78 Accepts]: Start accepts. Automaton has 57562 states and 330031 transitions. Word has length 11 [2020-04-17 19:00:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:37,675 INFO L479 AbstractCegarLoop]: Abstraction has 57562 states and 330031 transitions. [2020-04-17 19:00:37,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 19:00:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 57562 states and 330031 transitions. [2020-04-17 19:00:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 19:00:37,676 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:37,676 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:37,676 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]=== [2020-04-17 19:00:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:37,676 INFO L82 PathProgramCache]: Analyzing trace with hash -601130141, now seen corresponding path program 1 times [2020-04-17 19:00:37,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:37,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324453649] [2020-04-17 19:00:37,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-17 19:00:37,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324453649] [2020-04-17 19:00:37,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:37,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 19:00:37,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013663543] [2020-04-17 19:00:37,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 19:00:37,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:37,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 19:00:37,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 19:00:37,701 INFO L87 Difference]: Start difference. First operand 57562 states and 330031 transitions. Second operand 4 states. [2020-04-17 19:00:38,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:38,019 INFO L93 Difference]: Finished difference Result 46067 states and 261797 transitions. [2020-04-17 19:00:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:38,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 19:00:38,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:38,167 INFO L225 Difference]: With dead ends: 46067 [2020-04-17 19:00:38,167 INFO L226 Difference]: Without dead ends: 46067 [2020-04-17 19:00:38,168 INFO L678 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 [2020-04-17 19:00:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46067 states. [2020-04-17 19:00:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46067 to 34572. [2020-04-17 19:00:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34572 states. [2020-04-17 19:00:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34572 states to 34572 states and 193563 transitions. [2020-04-17 19:00:42,023 INFO L78 Accepts]: Start accepts. Automaton has 34572 states and 193563 transitions. Word has length 12 [2020-04-17 19:00:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:42,023 INFO L479 AbstractCegarLoop]: Abstraction has 34572 states and 193563 transitions. [2020-04-17 19:00:42,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 19:00:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 34572 states and 193563 transitions. [2020-04-17 19:00:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 19:00:42,024 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:42,024 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:42,024 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]=== [2020-04-17 19:00:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:42,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1950756351, now seen corresponding path program 1 times [2020-04-17 19:00:42,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:42,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123265742] [2020-04-17 19:00:42,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 19:00:42,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123265742] [2020-04-17 19:00:42,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:42,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 19:00:42,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128543136] [2020-04-17 19:00:42,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 19:00:42,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:42,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 19:00:42,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 19:00:42,038 INFO L87 Difference]: Start difference. First operand 34572 states and 193563 transitions. Second operand 3 states. [2020-04-17 19:00:42,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:42,338 INFO L93 Difference]: Finished difference Result 51759 states and 285634 transitions. [2020-04-17 19:00:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:42,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 19:00:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:42,501 INFO L225 Difference]: With dead ends: 51759 [2020-04-17 19:00:42,501 INFO L226 Difference]: Without dead ends: 51759 [2020-04-17 19:00:42,502 INFO L678 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 [2020-04-17 19:00:47,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51759 states. [2020-04-17 19:00:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51759 to 43159. [2020-04-17 19:00:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43159 states. [2020-04-17 19:00:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43159 states to 43159 states and 243856 transitions. [2020-04-17 19:00:48,281 INFO L78 Accepts]: Start accepts. Automaton has 43159 states and 243856 transitions. Word has length 14 [2020-04-17 19:00:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:48,281 INFO L479 AbstractCegarLoop]: Abstraction has 43159 states and 243856 transitions. [2020-04-17 19:00:48,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 19:00:48,281 INFO L276 IsEmpty]: Start isEmpty. Operand 43159 states and 243856 transitions. [2020-04-17 19:00:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 19:00:48,282 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:48,282 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:48,282 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]=== [2020-04-17 19:00:48,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:48,282 INFO L82 PathProgramCache]: Analyzing trace with hash 343906870, now seen corresponding path program 1 times [2020-04-17 19:00:48,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:48,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868599824] [2020-04-17 19:00:48,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-04-17 19:00:48,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868599824] [2020-04-17 19:00:48,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:48,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 19:00:48,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514857504] [2020-04-17 19:00:48,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 19:00:48,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:48,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 19:00:48,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 19:00:48,300 INFO L87 Difference]: Start difference. First operand 43159 states and 243856 transitions. Second operand 4 states. [2020-04-17 19:00:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:48,521 INFO L93 Difference]: Finished difference Result 34559 states and 193478 transitions. [2020-04-17 19:00:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:48,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 19:00:48,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:48,627 INFO L225 Difference]: With dead ends: 34559 [2020-04-17 19:00:48,627 INFO L226 Difference]: Without dead ends: 34559 [2020-04-17 19:00:48,628 INFO L678 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 [2020-04-17 19:00:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34559 states. [2020-04-17 19:00:50,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34559 to 25959. [2020-04-17 19:00:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25959 states. [2020-04-17 19:00:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25959 states to 25959 states and 143100 transitions. [2020-04-17 19:00:50,803 INFO L78 Accepts]: Start accepts. Automaton has 25959 states and 143100 transitions. Word has length 15 [2020-04-17 19:00:50,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:50,803 INFO L479 AbstractCegarLoop]: Abstraction has 25959 states and 143100 transitions. [2020-04-17 19:00:50,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 19:00:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 25959 states and 143100 transitions. [2020-04-17 19:00:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 19:00:50,804 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:50,804 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:50,804 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]=== [2020-04-17 19:00:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:50,804 INFO L82 PathProgramCache]: Analyzing trace with hash -408592942, now seen corresponding path program 1 times [2020-04-17 19:00:50,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:50,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658632742] [2020-04-17 19:00:50,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 19:00:50,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658632742] [2020-04-17 19:00:50,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:50,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 19:00:50,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546858669] [2020-04-17 19:00:50,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 19:00:50,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 19:00:50,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 19:00:50,824 INFO L87 Difference]: Start difference. First operand 25959 states and 143100 transitions. Second operand 3 states. [2020-04-17 19:00:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:51,071 INFO L93 Difference]: Finished difference Result 38727 states and 210643 transitions. [2020-04-17 19:00:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:51,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 19:00:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:51,860 INFO L225 Difference]: With dead ends: 38727 [2020-04-17 19:00:51,860 INFO L226 Difference]: Without dead ends: 38727 [2020-04-17 19:00:51,860 INFO L678 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 [2020-04-17 19:00:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38727 states. [2020-04-17 19:00:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38727 to 32338. [2020-04-17 19:00:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32338 states. [2020-04-17 19:00:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32338 states to 32338 states and 180031 transitions. [2020-04-17 19:00:53,586 INFO L78 Accepts]: Start accepts. Automaton has 32338 states and 180031 transitions. Word has length 17 [2020-04-17 19:00:53,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:53,586 INFO L479 AbstractCegarLoop]: Abstraction has 32338 states and 180031 transitions. [2020-04-17 19:00:53,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 19:00:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 32338 states and 180031 transitions. [2020-04-17 19:00:53,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 19:00:53,587 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:53,588 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:53,588 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]=== [2020-04-17 19:00:53,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:53,588 INFO L82 PathProgramCache]: Analyzing trace with hash 218524327, now seen corresponding path program 1 times [2020-04-17 19:00:53,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:53,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232463722] [2020-04-17 19:00:53,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-04-17 19:00:53,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232463722] [2020-04-17 19:00:53,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:53,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 19:00:53,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199033212] [2020-04-17 19:00:53,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 19:00:53,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:53,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 19:00:53,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 19:00:53,618 INFO L87 Difference]: Start difference. First operand 32338 states and 180031 transitions. Second operand 4 states. [2020-04-17 19:00:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:54,072 INFO L93 Difference]: Finished difference Result 25949 states and 143030 transitions. [2020-04-17 19:00:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:54,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 19:00:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:54,153 INFO L225 Difference]: With dead ends: 25949 [2020-04-17 19:00:54,153 INFO L226 Difference]: Without dead ends: 25949 [2020-04-17 19:00:54,153 INFO L678 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 [2020-04-17 19:00:54,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25949 states. [2020-04-17 19:00:55,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25949 to 19560. [2020-04-17 19:00:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19560 states. [2020-04-17 19:00:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19560 states to 19560 states and 106029 transitions. [2020-04-17 19:00:55,236 INFO L78 Accepts]: Start accepts. Automaton has 19560 states and 106029 transitions. Word has length 18 [2020-04-17 19:00:55,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:55,237 INFO L479 AbstractCegarLoop]: Abstraction has 19560 states and 106029 transitions. [2020-04-17 19:00:55,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 19:00:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 19560 states and 106029 transitions. [2020-04-17 19:00:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 19:00:55,239 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:55,240 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:55,240 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]=== [2020-04-17 19:00:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:55,240 INFO L82 PathProgramCache]: Analyzing trace with hash -640482004, now seen corresponding path program 1 times [2020-04-17 19:00:55,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:55,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555332994] [2020-04-17 19:00:55,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-04-17 19:00:55,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555332994] [2020-04-17 19:00:55,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:55,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 19:00:55,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847234209] [2020-04-17 19:00:55,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 19:00:55,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:55,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 19:00:55,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 19:00:55,260 INFO L87 Difference]: Start difference. First operand 19560 states and 106029 transitions. Second operand 3 states. [2020-04-17 19:00:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:55,430 INFO L93 Difference]: Finished difference Result 28773 states and 154399 transitions. [2020-04-17 19:00:55,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:55,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-04-17 19:00:55,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:55,512 INFO L225 Difference]: With dead ends: 28773 [2020-04-17 19:00:55,512 INFO L226 Difference]: Without dead ends: 28773 [2020-04-17 19:00:55,512 INFO L678 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 [2020-04-17 19:00:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28773 states. [2020-04-17 19:00:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28773 to 24163. [2020-04-17 19:00:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24163 states. [2020-04-17 19:00:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24163 states to 24163 states and 132493 transitions. [2020-04-17 19:00:56,996 INFO L78 Accepts]: Start accepts. Automaton has 24163 states and 132493 transitions. Word has length 20 [2020-04-17 19:00:56,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:56,996 INFO L479 AbstractCegarLoop]: Abstraction has 24163 states and 132493 transitions. [2020-04-17 19:00:56,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 19:00:56,996 INFO L276 IsEmpty]: Start isEmpty. Operand 24163 states and 132493 transitions. [2020-04-17 19:00:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 19:00:56,999 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:56,999 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:57,000 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]=== [2020-04-17 19:00:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:57,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1619896945, now seen corresponding path program 1 times [2020-04-17 19:00:57,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:57,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018307489] [2020-04-17 19:00:57,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-04-17 19:00:57,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018307489] [2020-04-17 19:00:57,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:57,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 19:00:57,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745259948] [2020-04-17 19:00:57,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 19:00:57,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:57,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 19:00:57,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 19:00:57,019 INFO L87 Difference]: Start difference. First operand 24163 states and 132493 transitions. Second operand 4 states. [2020-04-17 19:00:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:57,153 INFO L93 Difference]: Finished difference Result 19553 states and 105977 transitions. [2020-04-17 19:00:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:57,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-04-17 19:00:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:57,205 INFO L225 Difference]: With dead ends: 19553 [2020-04-17 19:00:57,205 INFO L226 Difference]: Without dead ends: 19553 [2020-04-17 19:00:57,206 INFO L678 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 [2020-04-17 19:00:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19553 states. [2020-04-17 19:00:57,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19553 to 14943. [2020-04-17 19:00:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14943 states. [2020-04-17 19:00:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14943 states to 14943 states and 79461 transitions. [2020-04-17 19:00:57,991 INFO L78 Accepts]: Start accepts. Automaton has 14943 states and 79461 transitions. Word has length 21 [2020-04-17 19:00:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:57,991 INFO L479 AbstractCegarLoop]: Abstraction has 14943 states and 79461 transitions. [2020-04-17 19:00:57,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 19:00:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 14943 states and 79461 transitions. [2020-04-17 19:00:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 19:00:57,995 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:57,995 INFO L425 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:57,995 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]=== [2020-04-17 19:00:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:57,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1741862694, now seen corresponding path program 1 times [2020-04-17 19:00:57,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:57,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658619703] [2020-04-17 19:00:57,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 19:00:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-04-17 19:00:58,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658619703] [2020-04-17 19:00:58,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 19:00:58,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 19:00:58,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085149631] [2020-04-17 19:00:58,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 19:00:58,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 19:00:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 19:00:58,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 19:00:58,017 INFO L87 Difference]: Start difference. First operand 14943 states and 79461 transitions. Second operand 3 states. [2020-04-17 19:00:58,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 19:00:58,238 INFO L93 Difference]: Finished difference Result 20763 states and 109990 transitions. [2020-04-17 19:00:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 19:00:58,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-04-17 19:00:58,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 19:00:58,573 INFO L225 Difference]: With dead ends: 20763 [2020-04-17 19:00:58,573 INFO L226 Difference]: Without dead ends: 20763 [2020-04-17 19:00:58,575 INFO L678 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 [2020-04-17 19:00:59,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20763 states. [2020-04-17 19:00:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20763 to 17851. [2020-04-17 19:00:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17851 states. [2020-04-17 19:00:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17851 states to 17851 states and 96166 transitions. [2020-04-17 19:00:59,430 INFO L78 Accepts]: Start accepts. Automaton has 17851 states and 96166 transitions. Word has length 23 [2020-04-17 19:00:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 19:00:59,430 INFO L479 AbstractCegarLoop]: Abstraction has 17851 states and 96166 transitions. [2020-04-17 19:00:59,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 19:00:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 17851 states and 96166 transitions. [2020-04-17 19:00:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-17 19:00:59,435 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 19:00:59,436 INFO L425 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 19:00:59,436 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]=== [2020-04-17 19:00:59,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 19:00:59,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1837019004, now seen corresponding path program 1 times [2020-04-17 19:00:59,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 19:00:59,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477241449] [2020-04-17 19:00:59,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 19:00:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 19:00:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 19:00:59,451 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 19:00:59,451 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 19:00:59,452 WARN L363 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-17 19:00:59,452 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2020-04-17 19:00:59,462 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,462 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,463 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,463 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,463 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,463 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,463 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,463 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,463 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,463 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,465 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,465 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,465 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,466 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,467 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,467 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,467 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,467 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,467 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,467 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,467 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,468 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,468 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,468 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,468 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,468 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,468 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,468 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,468 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,469 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,469 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,469 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,469 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,469 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,469 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,469 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,470 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,470 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,470 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,470 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,470 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,470 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,470 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,470 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,471 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,471 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,471 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,471 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,471 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,471 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,471 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,471 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,472 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,472 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,472 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,472 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,472 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,472 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,472 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,472 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,473 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,473 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,473 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,473 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,473 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,473 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,473 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,473 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,474 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,474 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,474 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,474 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,474 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,474 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,474 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,474 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,475 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,475 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,475 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,475 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,475 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,475 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,475 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,475 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,477 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,477 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,478 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,480 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,480 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,480 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,480 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,482 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,482 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,482 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,482 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,482 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,482 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,484 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,484 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,484 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,484 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,484 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,484 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,485 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,485 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,485 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,485 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,485 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,485 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,486 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,486 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,487 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,487 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,487 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,487 WARN L315 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,488 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,488 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,488 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,488 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,488 WARN L315 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,488 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 19:00:59,489 INFO L251 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-04-17 19:00:59,489 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 19:00:59,490 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 19:00:59,490 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 19:00:59,490 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 19:00:59,490 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 19:00:59,490 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 19:00:59,490 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 19:00:59,491 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 19:00:59,492 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 124 transitions, 344 flow [2020-04-17 19:00:59,492 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-04-17 19:00:59,513 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-04-17 19:00:59,513 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-04-17 19:00:59,516 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. [2020-04-17 19:00:59,522 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-04-17 19:00:59,542 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-04-17 19:00:59,542 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-04-17 19:00:59,544 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. [2020-04-17 19:00:59,551 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 10656 [2020-04-17 19:00:59,551 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 19:01:00,940 INFO L206 etLargeBlockEncoding]: Checked pairs total: 14930 [2020-04-17 19:01:00,940 INFO L214 etLargeBlockEncoding]: Total number of compositions: 105 [2020-04-17 19:01:00,941 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 38 transitions, 172 flow Received shutdown request... [2020-04-17 19:02:01,242 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-17 19:02:01,245 WARN L228 ceAbstractionStarter]: Timeout [2020-04-17 19:02:01,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 07:02:01 BasicIcfg [2020-04-17 19:02:01,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 19:02:01,248 INFO L168 Benchmark]: Toolchain (without parser) took 227671.94 ms. Allocated memory was 140.0 MB in the beginning and 3.2 GB in the end (delta: 3.1 GB). Free memory was 101.5 MB in the beginning and 914.1 MB in the end (delta: -812.6 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-04-17 19:02:01,248 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 140.0 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 19:02:01,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.76 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 164.2 MB in the end (delta: -64.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-04-17 19:02:01,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.90 ms. Allocated memory is still 203.9 MB. Free memory was 164.2 MB in the beginning and 162.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 19:02:01,250 INFO L168 Benchmark]: Boogie Preprocessor took 23.45 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 160.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 19:02:01,250 INFO L168 Benchmark]: RCFGBuilder took 342.76 ms. Allocated memory is still 203.9 MB. Free memory was 160.9 MB in the beginning and 144.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-04-17 19:02:01,251 INFO L168 Benchmark]: TraceAbstraction took 226583.19 ms. Allocated memory was 203.9 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 144.2 MB in the beginning and 914.1 MB in the end (delta: -769.9 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-04-17 19:02:01,253 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 140.0 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.76 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 164.2 MB in the end (delta: -64.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.90 ms. Allocated memory is still 203.9 MB. Free memory was 164.2 MB in the beginning and 162.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.45 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 160.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.76 ms. Allocated memory is still 203.9 MB. Free memory was 160.9 MB in the beginning and 144.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226583.19 ms. Allocated memory was 203.9 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 144.2 MB in the beginning and 914.1 MB in the end (delta: -769.9 MB). Peak memory consumption was 2.9 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: 0.7s, 48 ProgramPointsBefore, 18 ProgramPointsAfterwards, 46 TransitionsBefore, 13 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 466 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 1029 CheckedPairsTotal, 37 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 62 ProgramPointsBefore, 24 ProgramPointsAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 1656 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 966 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 48 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 72 TransitionsBefore, 23 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 1593 VarBasedMoverChecksPositive, 58 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 43 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 4290 CheckedPairsTotal, 63 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 90 ProgramPointsBefore, 36 ProgramPointsAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 4320 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 2473 VarBasedMoverChecksPositive, 100 VarBasedMoverChecksNegative, 56 SemBasedMoverChecksPositive, 52 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 6467 CheckedPairsTotal, 76 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 104 ProgramPointsBefore, 42 ProgramPointsAfterwards, 98 TransitionsBefore, 33 TransitionsAfterwards, 6120 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 3 ChoiceCompositions, 3503 VarBasedMoverChecksPositive, 143 VarBasedMoverChecksNegative, 79 SemBasedMoverChecksPositive, 73 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 10327 CheckedPairsTotal, 89 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 118 ProgramPointsBefore, 48 ProgramPointsAfterwards, 111 TransitionsBefore, 34 TransitionsAfterwards, 8232 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 4657 VarBasedMoverChecksPositive, 95 VarBasedMoverChecksNegative, 23 SemBasedMoverChecksPositive, 87 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 13237 CheckedPairsTotal, 95 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 132 ProgramPointsBefore, 54 ProgramPointsAfterwards, 124 TransitionsBefore, 38 TransitionsAfterwards, 10656 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 8 ChoiceCompositions, 6263 VarBasedMoverChecksPositive, 108 VarBasedMoverChecksNegative, 28 SemBasedMoverChecksPositive, 88 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 14930 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 183809 states. Currently 46278 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 8 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 226.2s, OverallIterations: 59, TraceHistogramMax: 8, AutomataDifference: 25.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 108.5s, HoareTripleCheckerStatistics: 1566 SDtfs, 1047 SDslu, 824 SDs, 0 SdLazy, 1192 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 76 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: 90.5s AutomataMinimizationTime, 52 MinimizatonAttempts, 192156 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s 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