/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:04:46,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:04:46,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:04:46,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:04:46,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:04:46,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:04:46,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:04:46,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:04:46,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:04:46,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:04:46,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:04:46,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:04:46,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:04:46,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:04:46,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:04:46,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:04:46,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:04:46,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:04:46,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:04:46,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:04:46,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:04:46,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:04:46,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:04:46,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:04:46,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:04:46,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:04:46,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:04:46,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:04:46,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:04:46,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:04:46,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:04:46,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:04:46,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:04:46,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:04:46,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:04:46,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:04:46,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:04:46,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:04:46,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:04:46,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:04:46,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:04:46,627 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 [2020-09-25 02:04:46,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:04:46,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:04:46,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:04:46,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:04:46,679 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:04:46,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:04:46,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:04:46,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:04:46,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:04:46,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:04:46,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:04:46,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:04:46,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:04:46,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:04:46,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:04:46,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:04:46,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:04:46,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:04:46,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:04:46,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:04:46,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:04:46,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:04:46,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:04:46,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:04:46,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:04:46,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:04:46,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:04:46,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:04:46,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:04:46,686 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-25 02:04:47,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:04:47,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:04:47,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:04:47,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:04:47,230 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:04:47,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-09-25 02:04:47,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4e432fc/a8e5f60f8ed74e11adf0bd55c98b42f3/FLAG616e4abdd [2020-09-25 02:04:47,940 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:04:47,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-09-25 02:04:47,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4e432fc/a8e5f60f8ed74e11adf0bd55c98b42f3/FLAG616e4abdd [2020-09-25 02:04:48,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4e432fc/a8e5f60f8ed74e11adf0bd55c98b42f3 [2020-09-25 02:04:48,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:04:48,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:04:48,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:48,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:04:48,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:04:48,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48, skipping insertion in model container [2020-09-25 02:04:48,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:04:48,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:04:48,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:48,560 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:04:48,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:48,603 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:04:48,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48 WrapperNode [2020-09-25 02:04:48,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:48,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:04:48,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:04:48,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:04:48,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (1/1) ... [2020-09-25 02:04:48,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:04:48,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:04:48,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:04:48,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:04:48,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (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 [2020-09-25 02:04:48,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:04:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:04:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:04:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:04:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 02:04:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:04:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 02:04:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:04:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:04:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:04:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:04:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:04:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:04:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:04:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 02:04:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:04:48,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:04:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:04:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 02:04:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:04:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:04:48,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:04:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:04:49,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:04:49,197 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:04:49,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:49 BoogieIcfgContainer [2020-09-25 02:04:49,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:04:49,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:04:49,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:04:49,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:04:49,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:04:48" (1/3) ... [2020-09-25 02:04:49,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e0a4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:49, skipping insertion in model container [2020-09-25 02:04:49,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:48" (2/3) ... [2020-09-25 02:04:49,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e0a4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:49, skipping insertion in model container [2020-09-25 02:04:49,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:49" (3/3) ... [2020-09-25 02:04:49,214 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-09-25 02:04:49,226 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:04:49,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:04:49,260 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:04:49,294 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:04:49,294 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:04:49,294 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:04:49,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:04:49,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:04:49,295 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:04:49,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:04:49,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:04:49,317 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-09-25 02:04:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 02:04:49,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:49,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:49,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:49,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:49,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1228919024, now seen corresponding path program 1 times [2020-09-25 02:04:49,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:49,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869447785] [2020-09-25 02:04:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 02:04:50,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-09-25 02:04:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 02:04:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:04:50,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:04:50,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:50,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:04:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:50,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:04:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:50,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:04:50,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:50,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:50,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 02:04:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:50,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:04:50,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:50,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:04:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:04:50,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:04:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:04:50,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869447785] [2020-09-25 02:04:50,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:04:50,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 02:04:50,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276053574] [2020-09-25 02:04:50,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:04:50,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:50,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:04:50,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:04:50,582 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 10 states. [2020-09-25 02:04:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:51,496 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2020-09-25 02:04:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:04:51,499 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-25 02:04:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:51,519 INFO L225 Difference]: With dead ends: 221 [2020-09-25 02:04:51,520 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 02:04:51,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:04:51,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 02:04:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2020-09-25 02:04:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 02:04:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-09-25 02:04:51,609 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 40 [2020-09-25 02:04:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:51,610 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-09-25 02:04:51,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:04:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-09-25 02:04:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:04:51,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:51,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:51,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:04:51,615 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:51,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2013393660, now seen corresponding path program 1 times [2020-09-25 02:04:51,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:51,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718752779] [2020-09-25 02:04:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:51,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:51,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:04:54,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2682 [2020-09-25 02:04:54,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:04:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 02:04:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:04:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:04:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:54,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:04:54,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 02:04:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:54,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:54,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:04:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:04:54,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:04:54,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:54,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 02:04:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:04:54,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:04:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:04:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:04:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:04:54,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718752779] [2020-09-25 02:04:54,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:04:54,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 02:04:54,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521163229] [2020-09-25 02:04:54,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:04:54,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:54,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:04:54,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:54,671 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 13 states. [2020-09-25 02:04:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:55,549 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 02:04:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 02:04:55,550 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-25 02:04:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:55,553 INFO L225 Difference]: With dead ends: 128 [2020-09-25 02:04:55,554 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 02:04:55,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:04:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 02:04:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-25 02:04:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 02:04:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2020-09-25 02:04:55,586 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 52 [2020-09-25 02:04:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:55,586 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2020-09-25 02:04:55,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:04:55,587 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2020-09-25 02:04:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 02:04:55,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:55,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:55,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:04:55,591 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1709597342, now seen corresponding path program 1 times [2020-09-25 02:04:55,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:55,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080689513] [2020-09-25 02:04:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:55,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 02:04:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:04:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3035 [2020-09-25 02:04:58,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:04:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 02:04:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 02:04:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:58,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:58,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:58,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:58,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:04:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:58,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:04:58,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:58,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 02:04:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:58,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:58,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:58,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:04:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:04:58,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:04:58,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:04:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:58,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:04:58,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:04:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 02:04:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:58,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:58,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:58,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:04:58,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:04:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:58,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 02:04:58,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080689513] [2020-09-25 02:04:58,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:58,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:04:58,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325103233] [2020-09-25 02:04:58,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:04:58,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:58,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:04:58,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:04:58,968 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 13 states. [2020-09-25 02:05:00,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:00,094 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2020-09-25 02:05:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 02:05:00,095 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-09-25 02:05:00,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:00,100 INFO L225 Difference]: With dead ends: 189 [2020-09-25 02:05:00,101 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 02:05:00,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-09-25 02:05:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 02:05:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 151. [2020-09-25 02:05:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-25 02:05:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2020-09-25 02:05:00,142 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 67 [2020-09-25 02:05:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:00,143 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2020-09-25 02:05:00,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:05:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2020-09-25 02:05:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 02:05:00,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:00,146 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:00,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:05:00,147 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:00,148 INFO L82 PathProgramCache]: Analyzing trace with hash 587834366, now seen corresponding path program 1 times [2020-09-25 02:05:00,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:00,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414040715] [2020-09-25 02:05:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:00,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:00,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 02:05:05,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:05:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:05:05,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:05:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 02:05:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 02:05:05,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:05,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:05,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:05:05,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:05:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:05,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:05:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 02:05:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:05,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:05:05,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:05:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:05:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:05:05,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:05:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:05:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:05:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:05,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:05:05,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:05:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 02:05:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:05,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:05:05,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:05:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 02:05:05,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414040715] [2020-09-25 02:05:05,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:05:05,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 02:05:05,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011200353] [2020-09-25 02:05:05,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:05:05,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:05,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:05:05,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:05:05,438 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand 11 states. [2020-09-25 02:05:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:05,968 INFO L93 Difference]: Finished difference Result 206 states and 227 transitions. [2020-09-25 02:05:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:05:05,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 02:05:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:05,970 INFO L225 Difference]: With dead ends: 206 [2020-09-25 02:05:05,970 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 02:05:05,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:05:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 02:05:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-09-25 02:05:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 02:05:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-09-25 02:05:05,991 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 67 [2020-09-25 02:05:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:05,993 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-09-25 02:05:05,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:05:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-09-25 02:05:05,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 02:05:06,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:06,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:06,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:05:06,000 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:06,001 INFO L82 PathProgramCache]: Analyzing trace with hash 687369648, now seen corresponding path program 1 times [2020-09-25 02:05:06,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:06,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047193630] [2020-09-25 02:05:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 02:05:11,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:05:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:05:11,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 02:05:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 02:05:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:05:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:11,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:05:11,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:11,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:05:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:05:11,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 02:05:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:11,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:05:11,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:05:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:05:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:05:11,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:05:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:11,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:05:11,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:05:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 02:05:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:11,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:05:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:05:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 02:05:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:12,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:12,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:05:12,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 02:05:12,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:05:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:05:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:05:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 02:05:12,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047193630] [2020-09-25 02:05:12,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:12,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 02:05:12,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622109936] [2020-09-25 02:05:12,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 02:05:12,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:12,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 02:05:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-09-25 02:05:12,225 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand 29 states. [2020-09-25 02:05:13,624 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-25 02:05:13,934 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-25 02:05:15,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:15,509 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2020-09-25 02:05:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 02:05:15,510 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 79 [2020-09-25 02:05:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:15,512 INFO L225 Difference]: With dead ends: 118 [2020-09-25 02:05:15,512 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 02:05:15,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=485, Invalid=3055, Unknown=0, NotChecked=0, Total=3540 [2020-09-25 02:05:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 02:05:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 02:05:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 02:05:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2020-09-25 02:05:15,524 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 79 [2020-09-25 02:05:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:15,524 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2020-09-25 02:05:15,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 02:05:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2020-09-25 02:05:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 02:05:15,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:15,526 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:15,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:05:15,527 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:15,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1532332446, now seen corresponding path program 2 times [2020-09-25 02:05:15,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:15,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197443836] [2020-09-25 02:05:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:15,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:16,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:20,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 02:05:20,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:05:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 02:05:20,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-09-25 02:05:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 02:05:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 02:05:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:21,589 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2020-09-25 02:05:21,782 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-09-25 02:05:21,952 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 30 [2020-09-25 02:05:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:05:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:05:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:05:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 02:05:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:22,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:05:22,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:05:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:05:22,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:05:22,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:05:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:22,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:05:22,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:05:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 02:05:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:22,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:05:22,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:05:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:05:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 02:05:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:22,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:05:22,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:05:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 02:05:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:22,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:05:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:05:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:22,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 02:05:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:22,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:22,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 02:05:22,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:22,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 02:05:22,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:22,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:05:22,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:22,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:05:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 02:05:23,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197443836] [2020-09-25 02:05:23,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:23,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-25 02:05:23,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885241362] [2020-09-25 02:05:23,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-25 02:05:23,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:23,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-25 02:05:23,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1379, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 02:05:23,291 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand 39 states. [2020-09-25 02:05:26,596 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-09-25 02:05:26,787 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-09-25 02:05:27,204 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-09-25 02:05:27,421 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-09-25 02:05:27,661 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-09-25 02:05:27,867 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-09-25 02:05:28,155 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-09-25 02:05:28,345 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-09-25 02:05:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:30,902 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-09-25 02:05:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-25 02:05:30,903 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 106 [2020-09-25 02:05:30,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:30,905 INFO L225 Difference]: With dead ends: 156 [2020-09-25 02:05:30,905 INFO L226 Difference]: Without dead ends: 151 [2020-09-25 02:05:30,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=788, Invalid=6184, Unknown=0, NotChecked=0, Total=6972 [2020-09-25 02:05:30,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-25 02:05:30,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2020-09-25 02:05:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-25 02:05:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2020-09-25 02:05:30,927 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 106 [2020-09-25 02:05:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:30,928 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2020-09-25 02:05:30,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-25 02:05:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2020-09-25 02:05:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:05:30,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:30,936 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:30,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:05:30,936 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:30,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:30,937 INFO L82 PathProgramCache]: Analyzing trace with hash 216091916, now seen corresponding path program 1 times [2020-09-25 02:05:30,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:30,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741390514] [2020-09-25 02:05:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:30,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:31,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:32,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:33,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:34,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking...