/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:49:35,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:49:35,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:49:35,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:49:35,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:49:35,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:49:35,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:49:35,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:49:35,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:49:35,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:49:35,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:49:35,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:49:35,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:49:35,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:49:35,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:49:35,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:49:35,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:49:35,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:49:35,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:49:35,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:49:35,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:49:35,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:49:35,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:49:35,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:49:35,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:49:35,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:49:35,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:49:35,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:49:35,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:49:35,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:49:35,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:49:35,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:49:35,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:49:35,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:49:35,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:49:35,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:49:35,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:49:35,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:49:35,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:49:35,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:49:35,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:49:35,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:49:35,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:49:35,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:49:35,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:49:35,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:49:35,353 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:49:35,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:49:35,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:49:35,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:49:35,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:49:35,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:49:35,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:49:35,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:49:35,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:49:35,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:49:35,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:49:35,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:49:35,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:49:35,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:49:35,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:49:35,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:49:35,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:49:35,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:49:35,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:49:35,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:49:35,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:49:35,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:49:35,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:49:35,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:49:35,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:49:35,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:49:35,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:49:35,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:49:35,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:49:35,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:49:35,652 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:49:35,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:49:35,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb01481b1/a344b111833a4fca8bc1170e6142d497/FLAG25a9c3559 [2020-10-13 13:49:36,268 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:49:36,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:49:36,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb01481b1/a344b111833a4fca8bc1170e6142d497/FLAG25a9c3559 [2020-10-13 13:49:36,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb01481b1/a344b111833a4fca8bc1170e6142d497 [2020-10-13 13:49:36,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:49:36,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:49:36,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:49:36,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:49:36,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:49:36,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:49:36" (1/1) ... [2020-10-13 13:49:36,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425b9ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:36, skipping insertion in model container [2020-10-13 13:49:36,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:49:36" (1/1) ... [2020-10-13 13:49:36,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:49:36,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:49:37,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:49:37,084 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:49:37,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:49:37,357 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:49:37,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37 WrapperNode [2020-10-13 13:49:37,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:49:37,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:49:37,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:49:37,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:49:37,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (1/1) ... [2020-10-13 13:49:37,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (1/1) ... [2020-10-13 13:49:37,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (1/1) ... [2020-10-13 13:49:37,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (1/1) ... [2020-10-13 13:49:37,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (1/1) ... [2020-10-13 13:49:37,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (1/1) ... [2020-10-13 13:49:37,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (1/1) ... [2020-10-13 13:49:37,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:49:37,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:49:37,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:49:37,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:49:37,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:49:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:49:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:49:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:49:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:49:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:49:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:49:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:49:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:49:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:49:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:49:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:49:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:49:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:49:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:49:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:49:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:49:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:49:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:49:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:49:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:49:38,765 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:49:38,766 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:49:38,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:49:38 BoogieIcfgContainer [2020-10-13 13:49:38,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:49:38,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:49:38,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:49:38,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:49:38,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:49:36" (1/3) ... [2020-10-13 13:49:38,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bacd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:49:38, skipping insertion in model container [2020-10-13 13:49:38,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:49:37" (2/3) ... [2020-10-13 13:49:38,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bacd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:49:38, skipping insertion in model container [2020-10-13 13:49:38,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:49:38" (3/3) ... [2020-10-13 13:49:38,781 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:49:38,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:49:38,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:49:38,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:49:38,838 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:49:38,838 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:49:38,838 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:49:38,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:49:38,839 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:49:38,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:49:38,839 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:49:38,839 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:49:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-10-13 13:49:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 13:49:38,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:49:38,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:49:38,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:49:38,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:49:38,887 INFO L82 PathProgramCache]: Analyzing trace with hash -483172071, now seen corresponding path program 1 times [2020-10-13 13:49:38,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:49:38,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727057797] [2020-10-13 13:49:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:49:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:49:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:39,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:42,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:44,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:49:44,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 13:49:44,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:49:44,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 13:49:44,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:49:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:49:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:49:44,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:49:44,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 13:49:44,879 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:49:44,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:49:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:49:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:44,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:49:44,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:49:44,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:49:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:49:44,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:49:44,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:49:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:49:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:49:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:49:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:49:45,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727057797] [2020-10-13 13:49:45,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:49:45,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:49:45,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232871926] [2020-10-13 13:49:45,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:49:45,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:49:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:49:45,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:49:45,050 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 5 states. [2020-10-13 13:49:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:49:48,473 INFO L93 Difference]: Finished difference Result 858 states and 1517 transitions. [2020-10-13 13:49:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:49:48,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 13:49:48,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:49:48,517 INFO L225 Difference]: With dead ends: 858 [2020-10-13 13:49:48,518 INFO L226 Difference]: Without dead ends: 575 [2020-10-13 13:49:48,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:49:48,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-13 13:49:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2020-10-13 13:49:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-10-13 13:49:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 836 transitions. [2020-10-13 13:49:48,678 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 836 transitions. Word has length 142 [2020-10-13 13:49:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:49:48,679 INFO L479 AbstractCegarLoop]: Abstraction has 573 states and 836 transitions. [2020-10-13 13:49:48,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:49:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 836 transitions. [2020-10-13 13:49:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 13:49:48,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:49:48,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:49:48,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:49:48,693 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:49:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:49:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1153887107, now seen corresponding path program 1 times [2020-10-13 13:49:48,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:49:48,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040095762] [2020-10-13 13:49:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:49:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:49:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:49,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:52,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:53,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:49:53,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 13:49:53,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:49:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 13:49:53,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:49:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:49:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:49:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:49:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:49:54,102 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:49:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:49:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:49:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:54,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:49:54,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:49:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:49:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:49:54,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:49:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:49:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:49:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:49:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:49:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:49:54,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040095762] [2020-10-13 13:49:54,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:49:54,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:49:54,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598808922] [2020-10-13 13:49:54,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:49:54,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:49:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:49:54,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:49:54,171 INFO L87 Difference]: Start difference. First operand 573 states and 836 transitions. Second operand 4 states. [2020-10-13 13:49:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:49:55,925 INFO L93 Difference]: Finished difference Result 1673 states and 2436 transitions. [2020-10-13 13:49:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:49:55,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-13 13:49:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:49:55,933 INFO L225 Difference]: With dead ends: 1673 [2020-10-13 13:49:55,933 INFO L226 Difference]: Without dead ends: 1132 [2020-10-13 13:49:55,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:49:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-10-13 13:49:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 575. [2020-10-13 13:49:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-13 13:49:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 838 transitions. [2020-10-13 13:49:55,993 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 838 transitions. Word has length 143 [2020-10-13 13:49:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:49:55,994 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 838 transitions. [2020-10-13 13:49:55,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:49:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 838 transitions. [2020-10-13 13:49:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 13:49:55,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:49:55,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:49:55,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:49:55,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:49:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:49:55,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1034466650, now seen corresponding path program 1 times [2020-10-13 13:49:55,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:49:55,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968813361] [2020-10-13 13:49:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:49:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:49:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:56,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:56,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:57,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:59,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:49:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:01,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:01,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 13:50:01,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:50:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:50:01,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:50:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:50:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 13:50:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:01,311 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:50:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:50:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:01,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968813361] [2020-10-13 13:50:01,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:01,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:50:01,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960581333] [2020-10-13 13:50:01,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:50:01,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:50:01,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:01,401 INFO L87 Difference]: Start difference. First operand 575 states and 838 transitions. Second operand 5 states. [2020-10-13 13:50:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:03,807 INFO L93 Difference]: Finished difference Result 1633 states and 2368 transitions. [2020-10-13 13:50:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:03,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 13:50:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:03,817 INFO L225 Difference]: With dead ends: 1633 [2020-10-13 13:50:03,817 INFO L226 Difference]: Without dead ends: 1092 [2020-10-13 13:50:03,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:50:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2020-10-13 13:50:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1090. [2020-10-13 13:50:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2020-10-13 13:50:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1567 transitions. [2020-10-13 13:50:03,916 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1567 transitions. Word has length 144 [2020-10-13 13:50:03,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:03,916 INFO L479 AbstractCegarLoop]: Abstraction has 1090 states and 1567 transitions. [2020-10-13 13:50:03,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:50:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1567 transitions. [2020-10-13 13:50:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 13:50:03,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:03,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:03,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:50:03,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:03,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:03,923 INFO L82 PathProgramCache]: Analyzing trace with hash -242382428, now seen corresponding path program 1 times [2020-10-13 13:50:03,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:03,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590242896] [2020-10-13 13:50:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:04,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:06,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:08,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:08,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 13:50:08,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:50:08,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:50:08,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:50:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:50:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:50:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:09,217 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:09,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:09,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:09,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:09,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:09,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:50:09,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:50:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:09,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590242896] [2020-10-13 13:50:09,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:09,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:50:09,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908663009] [2020-10-13 13:50:09,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:50:09,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:09,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:50:09,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:09,292 INFO L87 Difference]: Start difference. First operand 1090 states and 1567 transitions. Second operand 4 states. [2020-10-13 13:50:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:11,871 INFO L93 Difference]: Finished difference Result 3186 states and 4571 transitions. [2020-10-13 13:50:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:50:11,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-13 13:50:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:11,884 INFO L225 Difference]: With dead ends: 3186 [2020-10-13 13:50:11,885 INFO L226 Difference]: Without dead ends: 2144 [2020-10-13 13:50:11,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-10-13 13:50:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1094. [2020-10-13 13:50:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2020-10-13 13:50:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1571 transitions. [2020-10-13 13:50:11,970 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1571 transitions. Word has length 145 [2020-10-13 13:50:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:11,970 INFO L479 AbstractCegarLoop]: Abstraction has 1094 states and 1571 transitions. [2020-10-13 13:50:11,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:50:11,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1571 transitions. [2020-10-13 13:50:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 13:50:11,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:11,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:11,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:50:11,974 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1615652125, now seen corresponding path program 1 times [2020-10-13 13:50:11,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:11,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622708605] [2020-10-13 13:50:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:12,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:12,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:12,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:12,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:15,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:15,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:17,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:17,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 13:50:17,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:50:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:50:17,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:50:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:50:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:50:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:50:17,260 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:17,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:17,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:17,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:50:17,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:17,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:17,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622708605] [2020-10-13 13:50:17,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:17,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:50:17,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008210496] [2020-10-13 13:50:17,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:50:17,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:50:17,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:17,355 INFO L87 Difference]: Start difference. First operand 1094 states and 1571 transitions. Second operand 4 states. [2020-10-13 13:50:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:19,717 INFO L93 Difference]: Finished difference Result 2898 states and 4187 transitions. [2020-10-13 13:50:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:50:19,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-13 13:50:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:19,729 INFO L225 Difference]: With dead ends: 2898 [2020-10-13 13:50:19,730 INFO L226 Difference]: Without dead ends: 2092 [2020-10-13 13:50:19,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2020-10-13 13:50:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2090. [2020-10-13 13:50:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2020-10-13 13:50:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2969 transitions. [2020-10-13 13:50:19,849 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2969 transitions. Word has length 146 [2020-10-13 13:50:19,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:19,850 INFO L479 AbstractCegarLoop]: Abstraction has 2090 states and 2969 transitions. [2020-10-13 13:50:19,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:50:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2969 transitions. [2020-10-13 13:50:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 13:50:19,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:19,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:19,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:50:19,855 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:19,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2048881210, now seen corresponding path program 1 times [2020-10-13 13:50:19,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:19,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640660849] [2020-10-13 13:50:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:19,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:19,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:22,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:23,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:24,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 13:50:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:50:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:50:24,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:50:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:50:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:50:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:25,119 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:25,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:25,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:25,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:25,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:50:25,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:25,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:25,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640660849] [2020-10-13 13:50:25,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:25,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:50:25,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840372287] [2020-10-13 13:50:25,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:50:25,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:25,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:50:25,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:25,167 INFO L87 Difference]: Start difference. First operand 2090 states and 2969 transitions. Second operand 5 states. [2020-10-13 13:50:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:26,716 INFO L93 Difference]: Finished difference Result 4514 states and 6315 transitions. [2020-10-13 13:50:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:26,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 13:50:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:26,729 INFO L225 Difference]: With dead ends: 4514 [2020-10-13 13:50:26,730 INFO L226 Difference]: Without dead ends: 2304 [2020-10-13 13:50:26,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:50:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2020-10-13 13:50:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2302. [2020-10-13 13:50:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2302 states. [2020-10-13 13:50:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3191 transitions. [2020-10-13 13:50:26,890 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3191 transitions. Word has length 146 [2020-10-13 13:50:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:26,891 INFO L479 AbstractCegarLoop]: Abstraction has 2302 states and 3191 transitions. [2020-10-13 13:50:26,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:50:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3191 transitions. [2020-10-13 13:50:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 13:50:26,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:26,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:26,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:50:26,896 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:26,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1113059813, now seen corresponding path program 1 times [2020-10-13 13:50:26,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:26,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576516453] [2020-10-13 13:50:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:26,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:27,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:27,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:28,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:28,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:30,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:31,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:31,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 13:50:31,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:50:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:50:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:50:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:50:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:50:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:32,197 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:32,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:32,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:32,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:32,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:50:32,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:32,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:32,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576516453] [2020-10-13 13:50:32,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:32,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:50:32,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482221742] [2020-10-13 13:50:32,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:50:32,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:32,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:50:32,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:32,238 INFO L87 Difference]: Start difference. First operand 2302 states and 3191 transitions. Second operand 5 states. [2020-10-13 13:50:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:34,416 INFO L93 Difference]: Finished difference Result 3262 states and 4525 transitions. [2020-10-13 13:50:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:34,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 13:50:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:34,428 INFO L225 Difference]: With dead ends: 3262 [2020-10-13 13:50:34,428 INFO L226 Difference]: Without dead ends: 2304 [2020-10-13 13:50:34,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:50:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2020-10-13 13:50:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2090. [2020-10-13 13:50:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2020-10-13 13:50:34,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2929 transitions. [2020-10-13 13:50:34,564 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2929 transitions. Word has length 146 [2020-10-13 13:50:34,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:34,565 INFO L479 AbstractCegarLoop]: Abstraction has 2090 states and 2929 transitions. [2020-10-13 13:50:34,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:50:34,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2929 transitions. [2020-10-13 13:50:34,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 13:50:34,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:34,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:34,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:50:34,570 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1658747898, now seen corresponding path program 1 times [2020-10-13 13:50:34,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:34,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85596491] [2020-10-13 13:50:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:34,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:35,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:39,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:39,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 13:50:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 13:50:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:50:39,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:50:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:50:39,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:50:39,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:39,863 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:39,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:39,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:39,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:39,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:50:39,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:50:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:39,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85596491] [2020-10-13 13:50:39,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:39,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:50:39,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116606348] [2020-10-13 13:50:39,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:50:39,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:39,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:50:39,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:39,936 INFO L87 Difference]: Start difference. First operand 2090 states and 2929 transitions. Second operand 4 states. [2020-10-13 13:50:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:41,745 INFO L93 Difference]: Finished difference Result 5030 states and 7035 transitions. [2020-10-13 13:50:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:50:41,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-13 13:50:41,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:41,760 INFO L225 Difference]: With dead ends: 5030 [2020-10-13 13:50:41,760 INFO L226 Difference]: Without dead ends: 4072 [2020-10-13 13:50:41,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2020-10-13 13:50:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2098. [2020-10-13 13:50:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2098 states. [2020-10-13 13:50:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 2937 transitions. [2020-10-13 13:50:41,920 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 2937 transitions. Word has length 147 [2020-10-13 13:50:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:41,920 INFO L479 AbstractCegarLoop]: Abstraction has 2098 states and 2937 transitions. [2020-10-13 13:50:41,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:50:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 2937 transitions. [2020-10-13 13:50:41,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:50:41,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:41,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:41,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:50:41,925 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:41,926 INFO L82 PathProgramCache]: Analyzing trace with hash -126909509, now seen corresponding path program 1 times [2020-10-13 13:50:41,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:41,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698350022] [2020-10-13 13:50:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:43,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:46,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:46,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 13:50:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:50:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:50:46,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:50:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:50:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:50:46,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:47,203 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:47,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:47,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:50:47,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:47,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698350022] [2020-10-13 13:50:47,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:47,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:50:47,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510191579] [2020-10-13 13:50:47,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:50:47,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:47,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:50:47,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:47,241 INFO L87 Difference]: Start difference. First operand 2098 states and 2937 transitions. Second operand 5 states. [2020-10-13 13:50:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:49,446 INFO L93 Difference]: Finished difference Result 6040 states and 8422 transitions. [2020-10-13 13:50:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:49,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 13:50:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:49,467 INFO L225 Difference]: With dead ends: 6040 [2020-10-13 13:50:49,467 INFO L226 Difference]: Without dead ends: 3989 [2020-10-13 13:50:49,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:50:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2020-10-13 13:50:49,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3987. [2020-10-13 13:50:49,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3987 states. [2020-10-13 13:50:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 5501 transitions. [2020-10-13 13:50:49,798 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 5501 transitions. Word has length 148 [2020-10-13 13:50:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:49,799 INFO L479 AbstractCegarLoop]: Abstraction has 3987 states and 5501 transitions. [2020-10-13 13:50:49,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:50:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 5501 transitions. [2020-10-13 13:50:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:50:49,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:49,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:49,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:50:49,807 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:49,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2084612956, now seen corresponding path program 1 times [2020-10-13 13:50:49,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:49,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323844612] [2020-10-13 13:50:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:51,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 13:50:51,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:50:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1716 [2020-10-13 13:50:51,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:50:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:50:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 13:50:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:51,783 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:51,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:51,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:50:51,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:51,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323844612] [2020-10-13 13:50:51,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:51,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:50:51,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846829959] [2020-10-13 13:50:51,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:50:51,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:51,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:50:51,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:51,822 INFO L87 Difference]: Start difference. First operand 3987 states and 5501 transitions. Second operand 4 states. [2020-10-13 13:50:52,033 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 13:50:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:53,501 INFO L93 Difference]: Finished difference Result 8007 states and 11599 transitions. [2020-10-13 13:50:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:53,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-13 13:50:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:53,527 INFO L225 Difference]: With dead ends: 8007 [2020-10-13 13:50:53,527 INFO L226 Difference]: Without dead ends: 6605 [2020-10-13 13:50:53,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2020-10-13 13:50:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 6603. [2020-10-13 13:50:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6603 states. [2020-10-13 13:50:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6603 states to 6603 states and 9301 transitions. [2020-10-13 13:50:53,991 INFO L78 Accepts]: Start accepts. Automaton has 6603 states and 9301 transitions. Word has length 148 [2020-10-13 13:50:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:53,991 INFO L479 AbstractCegarLoop]: Abstraction has 6603 states and 9301 transitions. [2020-10-13 13:50:53,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:50:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6603 states and 9301 transitions. [2020-10-13 13:50:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:50:54,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:54,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:54,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:50:54,002 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:54,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:54,003 INFO L82 PathProgramCache]: Analyzing trace with hash -601112914, now seen corresponding path program 1 times [2020-10-13 13:50:54,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:54,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328152755] [2020-10-13 13:50:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:54,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:54,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 13:50:54,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:54,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 13:50:54,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:50:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 13:50:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 13:50:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:50:54,533 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:50:54,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:54,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:54,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:54,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:50:54,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:54,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328152755] [2020-10-13 13:50:54,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:54,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:50:54,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437789591] [2020-10-13 13:50:54,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:50:54,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:54,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:50:54,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:54,585 INFO L87 Difference]: Start difference. First operand 6603 states and 9301 transitions. Second operand 4 states. [2020-10-13 13:50:54,839 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-13 13:50:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:56,428 INFO L93 Difference]: Finished difference Result 14239 states and 20823 transitions. [2020-10-13 13:50:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:56,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-13 13:50:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:56,454 INFO L225 Difference]: With dead ends: 14239 [2020-10-13 13:50:56,454 INFO L226 Difference]: Without dead ends: 11677 [2020-10-13 13:50:56,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11677 states. [2020-10-13 13:50:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11677 to 11675. [2020-10-13 13:50:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11675 states. [2020-10-13 13:50:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11675 states to 11675 states and 16613 transitions. [2020-10-13 13:50:57,048 INFO L78 Accepts]: Start accepts. Automaton has 11675 states and 16613 transitions. Word has length 148 [2020-10-13 13:50:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:57,049 INFO L479 AbstractCegarLoop]: Abstraction has 11675 states and 16613 transitions. [2020-10-13 13:50:57,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:50:57,049 INFO L276 IsEmpty]: Start isEmpty. Operand 11675 states and 16613 transitions. [2020-10-13 13:50:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:50:57,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:57,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:57,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:50:57,067 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:57,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1497708571, now seen corresponding path program 1 times [2020-10-13 13:50:57,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:57,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187164500] [2020-10-13 13:50:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 13:50:57,115 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 13:50:57,115 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 13:50:57,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:50:57,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:50:57 BoogieIcfgContainer [2020-10-13 13:50:57,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 13:50:57,174 INFO L168 Benchmark]: Toolchain (without parser) took 80611.06 ms. Allocated memory was 141.0 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 102.9 MB in the beginning and 271.3 MB in the end (delta: -168.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-13 13:50:57,175 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-10-13 13:50:57,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.29 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 173.3 MB in the end (delta: -70.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-10-13 13:50:57,176 INFO L168 Benchmark]: Boogie Preprocessor took 85.02 ms. Allocated memory is still 204.5 MB. Free memory was 173.3 MB in the beginning and 169.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-13 13:50:57,177 INFO L168 Benchmark]: RCFGBuilder took 1328.30 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 169.3 MB in the beginning and 157.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-10-13 13:50:57,177 INFO L168 Benchmark]: TraceAbstraction took 78398.57 ms. Allocated memory was 235.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 157.4 MB in the beginning and 271.3 MB in the end (delta: -113.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-13 13:50:57,181 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 793.29 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 173.3 MB in the end (delta: -70.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.02 ms. Allocated memory is still 204.5 MB. Free memory was 173.3 MB in the beginning and 169.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1328.30 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 169.3 MB in the beginning and 157.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 78398.57 ms. Allocated memory was 235.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 157.4 MB in the beginning and 271.3 MB in the end (delta: -113.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 813]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2198; [L72] int __tmp_2199_0; [L73] int __return_2307; [L74] int __return_2212; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_char() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_char() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_char() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L2223] COND FALSE !(!(init__r131 == 0)) [L2239] init__tmp = 0 [L137] init__r122 = (_Bool)init__tmp [L138] COND FALSE !(!(init__r131 == 0)) [L2200] COND FALSE !(!(init__r121 == 0)) [L2216] init__tmp___0 = 0 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND FALSE !(!(init__r211 == 0)) [L2177] COND FALSE !(!(init__r231 == 0)) [L2193] init__tmp___1 = 0 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L2154] COND FALSE !(!(init__r211 == 0)) [L2170] init__tmp___2 = 0 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L2131] COND FALSE !(!(init__r321 == 0)) [L2147] init__tmp___3 = 0 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND FALSE !(!(init__r321 == 0)) [L2108] COND FALSE !(!(init__r311 == 0)) [L2124] init__tmp___4 = 0 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE ((int)max1) == ((int)id1) [L183] COND TRUE ((int)max2) == ((int)id2) [L185] COND TRUE ((int)max3) == ((int)id3) [L187] COND TRUE ((int)st1) == 0 [L189] COND TRUE ((int)st2) == 0 [L191] COND TRUE ((int)st3) == 0 [L193] COND TRUE ((int)nl1) == 0 [L195] COND TRUE ((int)nl2) == 0 [L197] COND TRUE ((int)nl3) == 0 [L199] COND TRUE ((int)mode1) == 0 [L201] COND TRUE ((int)mode2) == 0 [L203] COND TRUE ((int)mode3) == 0 [L205] init__tmp___5 = 1 [L206] __return_1708 = init__tmp___5 [L207] main__i2 = __return_1708 [L208] COND TRUE main__i2 != 0 [L210] p12_old = nomsg [L211] p12_new = nomsg [L212] p13_old = nomsg [L213] p13_new = nomsg [L214] p21_old = nomsg [L215] p21_new = nomsg [L216] p23_old = nomsg [L217] p23_new = nomsg [L218] p31_old = nomsg [L219] p31_new = nomsg [L220] p32_old = nomsg [L221] p32_new = nomsg [L222] main__i2 = 0 [L223] COND TRUE main__i2 < 6 [L226] COND FALSE !(!(mode1 == 0)) [L232] COND TRUE ((int)r1) < 2 [L234] COND FALSE !(!(ep12 == 0)) [L245] COND FALSE !(!(ep13 == 0)) [L256] mode1 = 1 [L258] COND FALSE !(!(mode2 == 0)) [L264] COND TRUE ((int)r2) < 2 [L266] COND FALSE !(!(ep21 == 0)) [L277] COND FALSE !(!(ep23 == 0)) [L288] mode2 = 1 [L290] COND FALSE !(!(mode3 == 0)) [L296] COND TRUE ((int)r3) < 2 [L298] COND FALSE !(!(ep31 == 0)) [L309] COND FALSE !(!(ep32 == 0)) [L320] mode3 = 1 [L321] p12_old = p12_new [L322] p12_new = nomsg [L323] p13_old = p13_new [L324] p13_new = nomsg [L325] p21_old = p21_new [L326] p21_new = nomsg [L327] p23_old = p23_new [L328] p23_new = nomsg [L329] p31_old = p31_new [L330] p31_new = nomsg [L331] p32_old = p32_new [L332] p32_new = nomsg [L334] int check__tmp; [L335] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L337] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L339] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L341] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L343] COND FALSE !(((int)r1) >= 2) [L349] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L351] COND TRUE ((int)r1) < 2 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] check__tmp = 1 [L364] __return_1836 = check__tmp [L365] main__c1 = __return_1836 [L367] _Bool __tmp_1; [L368] __tmp_1 = main__c1 [L369] _Bool assert__arg; [L370] assert__arg = __tmp_1 [L371] COND FALSE !(assert__arg == 0) [L377] int main____CPAchecker_TMP_0 = main__i2; [L378] main__i2 = main__i2 + 1 [L379] COND TRUE main__i2 < 6 [L382] COND TRUE !(mode1 == 0) [L384] r1 = (char)(((int)r1) + 1) [L385] COND FALSE !(!(ep21 == 0)) [L393] COND FALSE !(!(ep31 == 0)) [L401] COND FALSE !(((int)r1) == 2) [L407] mode1 = 0 [L409] COND TRUE !(mode2 == 0) [L411] r2 = (char)(((int)r2) + 1) [L412] COND FALSE !(!(ep12 == 0)) [L420] COND FALSE !(!(ep32 == 0)) [L428] COND FALSE !(((int)r2) == 2) [L434] mode2 = 0 [L436] COND TRUE !(mode3 == 0) [L438] r3 = (char)(((int)r3) + 1) [L439] COND FALSE !(!(ep13 == 0)) [L447] COND FALSE !(!(ep23 == 0)) [L455] COND FALSE !(((int)r3) == 2) [L461] mode3 = 0 [L462] p12_old = p12_new [L463] p12_new = nomsg [L464] p13_old = p13_new [L465] p13_new = nomsg [L466] p21_old = p21_new [L467] p21_new = nomsg [L468] p23_old = p23_new [L469] p23_new = nomsg [L470] p31_old = p31_new [L471] p31_new = nomsg [L472] p32_old = p32_new [L473] p32_new = nomsg [L475] int check__tmp; [L476] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L478] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L480] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L482] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L484] COND FALSE !(((int)r1) >= 2) [L490] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L492] COND TRUE ((int)r1) < 2 [L494] COND FALSE !(((int)r1) >= 2) [L500] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L502] COND TRUE ((int)r1) < 2 [L504] check__tmp = 1 [L505] __return_1954 = check__tmp [L506] main__c1 = __return_1954 [L508] _Bool __tmp_2; [L509] __tmp_2 = main__c1 [L510] _Bool assert__arg; [L511] assert__arg = __tmp_2 [L512] COND FALSE !(assert__arg == 0) [L518] int main____CPAchecker_TMP_0 = main__i2; [L519] main__i2 = main__i2 + 1 [L520] COND TRUE main__i2 < 6 [L523] COND FALSE !(!(mode1 == 0)) [L529] COND TRUE ((int)r1) < 2 [L531] COND FALSE !(!(ep12 == 0)) [L542] COND FALSE !(!(ep13 == 0)) [L553] mode1 = 1 [L555] COND FALSE !(!(mode2 == 0)) [L561] COND TRUE ((int)r2) < 2 [L563] COND FALSE !(!(ep21 == 0)) [L574] COND FALSE !(!(ep23 == 0)) [L585] mode2 = 1 [L587] COND FALSE !(!(mode3 == 0)) [L593] COND TRUE ((int)r3) < 2 [L595] COND FALSE !(!(ep31 == 0)) [L606] COND FALSE !(!(ep32 == 0)) [L617] mode3 = 1 [L618] p12_old = p12_new [L619] p12_new = nomsg [L620] p13_old = p13_new [L621] p13_new = nomsg [L622] p21_old = p21_new [L623] p21_new = nomsg [L624] p23_old = p23_new [L625] p23_new = nomsg [L626] p31_old = p31_new [L627] p31_new = nomsg [L628] p32_old = p32_new [L629] p32_new = nomsg [L631] int check__tmp; [L632] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L634] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L636] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L638] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L640] COND FALSE !(((int)r1) >= 2) [L646] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L648] COND TRUE ((int)r1) < 2 [L650] COND FALSE !(((int)r1) >= 2) [L656] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L658] COND TRUE ((int)r1) < 2 [L660] check__tmp = 1 [L661] __return_2075 = check__tmp [L662] main__c1 = __return_2075 [L664] _Bool __tmp_3; [L665] __tmp_3 = main__c1 [L666] _Bool assert__arg; [L667] assert__arg = __tmp_3 [L668] COND FALSE !(assert__arg == 0) [L674] int main____CPAchecker_TMP_0 = main__i2; [L675] main__i2 = main__i2 + 1 [L676] COND TRUE main__i2 < 6 [L679] COND TRUE !(mode1 == 0) [L681] r1 = (char)(((int)r1) + 1) [L682] COND FALSE !(!(ep21 == 0)) [L690] COND FALSE !(!(ep31 == 0)) [L698] COND TRUE ((int)r1) == 2 [L700] COND TRUE ((int)max1) == ((int)id1) [L702] st1 = 1 [L704] mode1 = 0 [L706] COND TRUE !(mode2 == 0) [L708] r2 = (char)(((int)r2) + 1) [L709] COND FALSE !(!(ep12 == 0)) [L717] COND FALSE !(!(ep32 == 0)) [L725] COND TRUE ((int)r2) == 2 [L727] COND TRUE ((int)max2) == ((int)id2) [L729] st2 = 1 [L731] mode2 = 0 [L733] COND TRUE !(mode3 == 0) [L735] r3 = (char)(((int)r3) + 1) [L736] COND FALSE !(!(ep13 == 0)) [L744] COND FALSE !(!(ep23 == 0)) [L752] COND TRUE ((int)r3) == 2 [L754] COND TRUE ((int)max3) == ((int)id3) [L756] st3 = 1 [L758] mode3 = 0 [L759] p12_old = p12_new [L760] p12_new = nomsg [L761] p13_old = p13_new [L762] p13_new = nomsg [L763] p21_old = p21_new [L764] p21_new = nomsg [L765] p23_old = p23_new [L766] p23_new = nomsg [L767] p31_old = p31_new [L768] p31_new = nomsg [L769] p32_old = p32_new [L770] p32_new = nomsg [L772] int check__tmp; [L773] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1398] check__tmp = 0 [L801] __return_2198 = check__tmp [L802] main__c1 = __return_2198 [L803] __tmp_2199_0 = main____CPAchecker_TMP_0 [L805] main____CPAchecker_TMP_0 = __tmp_2199_0 [L807] _Bool __tmp_4; [L808] __tmp_4 = main__c1 [L809] _Bool assert__arg; [L810] assert__arg = __tmp_4 [L811] COND TRUE assert__arg == 0 [L813] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 78.2s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 24.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7103 SDtfs, 6894 SDslu, 4435 SDs, 0 SdLazy, 7591 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11675occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 3809 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 50.4s InterpolantComputationTime, 1751 NumberOfCodeBlocks, 1751 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1592 ConstructedInterpolants, 0 QuantifiedInterpolants, 809241 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...