/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:47:34,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:47:34,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:47:34,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:47:34,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:47:34,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:47:34,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:47:34,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:47:34,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:47:34,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:47:34,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:47:34,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:47:34,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:47:34,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:47:34,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:47:34,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:47:34,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:47:34,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:47:34,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:47:34,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:47:34,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:47:34,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:47:34,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:47:34,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:47:34,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:47:34,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:47:34,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:47:34,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:47:34,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:47:34,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:47:34,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:47:34,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:47:34,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:47:34,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:47:34,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:47:34,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:47:34,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:47:34,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:47:34,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:47:34,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:47:34,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:47:34,631 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 14:47:34,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:47:34,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:47:34,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:47:34,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:47:34,684 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:47:34,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:47:34,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:47:34,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:47:34,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:47:34,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:47:34,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:47:34,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:47:34,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:47:34,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:47:34,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:47:34,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:47:34,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:47:34,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:47:34,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:47:34,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:47:34,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:47:34,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:47:34,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:47:34,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:47:34,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:47:34,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:47:34,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:47:34,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:47:34,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:47:34,692 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:47:35,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:47:35,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:47:35,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:47:35,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:47:35,186 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:47:35,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 14:47:35,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99ff5b32/bee37023efd0494e870914558712fab1/FLAGd7b833ece [2020-09-25 14:47:35,824 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:47:35,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 14:47:35,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99ff5b32/bee37023efd0494e870914558712fab1/FLAGd7b833ece [2020-09-25 14:47:36,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99ff5b32/bee37023efd0494e870914558712fab1 [2020-09-25 14:47:36,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:47:36,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:47:36,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:47:36,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:47:36,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:47:36,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36, skipping insertion in model container [2020-09-25 14:47:36,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:47:36,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:47:36,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:47:36,512 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:47:36,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:47:36,561 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:47:36,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36 WrapperNode [2020-09-25 14:47:36,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:47:36,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:47:36,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:47:36,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:47:36,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (1/1) ... [2020-09-25 14:47:36,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:47:36,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:47:36,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:47:36,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:47:36,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (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 14:47:36,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:47:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:47:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 14:47:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:47:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:47:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:47:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:47:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 14:47:36,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:47:36,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:47:36,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:47:36,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:47:36,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:47:37,149 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:47:37,149 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 14:47:37,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:47:37 BoogieIcfgContainer [2020-09-25 14:47:37,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:47:37,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:47:37,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:47:37,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:47:37,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:47:36" (1/3) ... [2020-09-25 14:47:37,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b75713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:47:37, skipping insertion in model container [2020-09-25 14:47:37,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:36" (2/3) ... [2020-09-25 14:47:37,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b75713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:47:37, skipping insertion in model container [2020-09-25 14:47:37,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:47:37" (3/3) ... [2020-09-25 14:47:37,167 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-09-25 14:47:37,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:47:37,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:47:37,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:47:37,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:47:37,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:47:37,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:47:37,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:47:37,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:47:37,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:47:37,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:47:37,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:47:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 14:47:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 14:47:37,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:37,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:37,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:37,322 INFO L82 PathProgramCache]: Analyzing trace with hash -537390573, now seen corresponding path program 1 times [2020-09-25 14:47:37,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:37,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212377103] [2020-09-25 14:47:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 14:47:37,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 14:47:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:47:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:47:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 14:47:37,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:37,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:47:37,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:47:37,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212377103] [2020-09-25 14:47:37,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:37,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:47:37,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468526862] [2020-09-25 14:47:37,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:47:37,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:37,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:47:37,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:47:37,841 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-25 14:47:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:38,059 INFO L93 Difference]: Finished difference Result 157 states and 242 transitions. [2020-09-25 14:47:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:47:38,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 14:47:38,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:38,077 INFO L225 Difference]: With dead ends: 157 [2020-09-25 14:47:38,077 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 14:47:38,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:47:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 14:47:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-09-25 14:47:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 14:47:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2020-09-25 14:47:38,151 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 19 [2020-09-25 14:47:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:38,152 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2020-09-25 14:47:38,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:47:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2020-09-25 14:47:38,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 14:47:38,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:38,155 INFO L422 BasicCegarLoop]: trace histogram [2, 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 14:47:38,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:47:38,155 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:38,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1383579147, now seen corresponding path program 1 times [2020-09-25 14:47:38,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:38,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498379685] [2020-09-25 14:47:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:47:38,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-25 14:47:38,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:47:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:47:38,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:38,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:38,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 14:47:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:38,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:47:38,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498379685] [2020-09-25 14:47:38,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:38,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:47:38,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394698428] [2020-09-25 14:47:38,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:47:38,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:38,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:47:38,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:47:38,622 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand 5 states. [2020-09-25 14:47:38,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:38,750 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-09-25 14:47:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:47:38,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 14:47:38,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:38,755 INFO L225 Difference]: With dead ends: 88 [2020-09-25 14:47:38,756 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 14:47:38,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:47:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 14:47:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 14:47:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 14:47:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-09-25 14:47:38,770 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 25 [2020-09-25 14:47:38,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:38,771 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-09-25 14:47:38,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:47:38,771 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-09-25 14:47:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 14:47:38,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:38,772 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:47:38,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:47:38,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:38,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:38,773 INFO L82 PathProgramCache]: Analyzing trace with hash 344115466, now seen corresponding path program 1 times [2020-09-25 14:47:38,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:38,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664967340] [2020-09-25 14:47:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 14:47:38,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 14:47:38,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:47:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:47:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:38,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:38,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:38,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:47:38,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664967340] [2020-09-25 14:47:38,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:38,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:47:38,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324577328] [2020-09-25 14:47:38,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:47:38,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:47:38,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:47:38,963 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 7 states. [2020-09-25 14:47:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:39,109 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2020-09-25 14:47:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:47:39,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-25 14:47:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:39,111 INFO L225 Difference]: With dead ends: 90 [2020-09-25 14:47:39,112 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 14:47:39,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 14:47:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 14:47:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 14:47:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-09-25 14:47:39,125 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 28 [2020-09-25 14:47:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:39,125 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-09-25 14:47:39,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:47:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-09-25 14:47:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:47:39,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:39,127 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 14:47:39,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:47:39,128 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1469174755, now seen corresponding path program 1 times [2020-09-25 14:47:39,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:39,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560130667] [2020-09-25 14:47:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:47:40,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:47:40,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-09-25 14:47:40,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:47:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:47:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:40,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:40,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:40,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:47:40,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:40,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:47:40,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560130667] [2020-09-25 14:47:40,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:40,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:47:40,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655884392] [2020-09-25 14:47:40,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:47:40,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:40,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:47:40,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:47:40,761 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 7 states. [2020-09-25 14:47:40,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:40,947 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-25 14:47:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:47:40,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 14:47:40,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:40,950 INFO L225 Difference]: With dead ends: 94 [2020-09-25 14:47:40,953 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 14:47:40,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 14:47:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-09-25 14:47:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 14:47:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-09-25 14:47:40,980 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 38 [2020-09-25 14:47:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:40,981 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-09-25 14:47:40,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:47:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-09-25 14:47:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:47:40,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:40,987 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 14:47:40,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:47:40,988 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:40,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:40,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1945975399, now seen corresponding path program 1 times [2020-09-25 14:47:40,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:40,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009655644] [2020-09-25 14:47:40,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:42,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:42,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:47:42,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:47:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-09-25 14:47:42,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:42,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:47:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:47:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:47:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:42,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:42,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:42,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:42,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:42,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:42,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:42,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:47:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:42,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:42,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:42,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:42,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:42,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:42,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:42,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:42,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:42,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:42,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:42,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:47:42,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009655644] [2020-09-25 14:47:42,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:42,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:47:42,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191333050] [2020-09-25 14:47:42,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:47:42,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:42,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:47:42,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:47:42,428 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 7 states. [2020-09-25 14:47:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:42,613 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2020-09-25 14:47:42,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:47:42,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 14:47:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:42,615 INFO L225 Difference]: With dead ends: 123 [2020-09-25 14:47:42,615 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 14:47:42,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:42,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 14:47:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2020-09-25 14:47:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 14:47:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2020-09-25 14:47:42,643 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 38 [2020-09-25 14:47:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:42,645 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2020-09-25 14:47:42,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:47:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2020-09-25 14:47:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 14:47:42,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:42,650 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-09-25 14:47:42,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:47:42,651 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:42,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1177695863, now seen corresponding path program 1 times [2020-09-25 14:47:42,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:42,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806610257] [2020-09-25 14:47:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:47:43,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-09-25 14:47:43,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:47:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:47:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:47:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:43,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:43,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:43,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:43,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 14:47:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:43,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 14:47:43,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806610257] [2020-09-25 14:47:43,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:47:43,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:47:43,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631328369] [2020-09-25 14:47:43,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:47:43,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:43,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:47:43,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:43,530 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 10 states. [2020-09-25 14:47:43,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:43,869 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2020-09-25 14:47:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:47:43,870 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 14:47:43,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:43,872 INFO L225 Difference]: With dead ends: 117 [2020-09-25 14:47:43,872 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 14:47:43,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 14:47:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-09-25 14:47:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 14:47:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-09-25 14:47:43,884 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 46 [2020-09-25 14:47:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:43,885 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-09-25 14:47:43,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:47:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-09-25 14:47:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 14:47:43,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:43,887 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:43,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:47:43,887 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:43,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1826770767, now seen corresponding path program 1 times [2020-09-25 14:47:43,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:43,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460567853] [2020-09-25 14:47:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:44,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 14:47:44,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-09-25 14:47:44,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:44,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:47:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:47:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 14:47:44,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:45,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:45,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:45,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:45,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:45,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:45,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:45,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:45,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:45,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:47:45,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:45,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:45,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:45,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:45,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:45,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:45,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:45,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:47:45,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:45,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:45,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:45,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:45,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:45,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:45,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:47:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:45,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:45,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:45,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:45,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:45,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:47:45,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460567853] [2020-09-25 14:47:45,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:45,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:47:45,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544317864] [2020-09-25 14:47:45,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:47:45,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:45,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:47:45,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:45,078 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 9 states. [2020-09-25 14:47:45,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:45,376 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2020-09-25 14:47:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:47:45,376 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 14:47:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:45,378 INFO L225 Difference]: With dead ends: 130 [2020-09-25 14:47:45,378 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 14:47:45,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 14:47:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-09-25 14:47:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-25 14:47:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-09-25 14:47:45,390 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 49 [2020-09-25 14:47:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:45,391 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-09-25 14:47:45,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:47:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-09-25 14:47:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 14:47:45,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:45,393 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:45,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:47:45,393 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:45,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1519048418, now seen corresponding path program 1 times [2020-09-25 14:47:45,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:45,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082935437] [2020-09-25 14:47:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:45,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:46,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:46,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:47:46,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-09-25 14:47:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:46,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:47:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:47:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:47:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:46,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:46,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:46,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:46,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:46,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:46,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:46,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:46,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:46,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:46,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:46,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:46,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:46,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:46,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:46,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:46,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:46,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:46,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:46,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:46,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:46,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:47:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:46,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:46,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:46,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:46,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:46,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:46,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:46,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:46,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:47:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:46,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:46,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:46,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:46,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:46,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:46,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:46,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:46,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 14:47:46,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082935437] [2020-09-25 14:47:46,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:46,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:47:46,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56103503] [2020-09-25 14:47:46,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:47:46,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:47:46,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:46,945 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 9 states. [2020-09-25 14:47:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:47,129 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-25 14:47:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:47:47,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-25 14:47:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:47,133 INFO L225 Difference]: With dead ends: 135 [2020-09-25 14:47:47,133 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 14:47:47,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 14:47:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2020-09-25 14:47:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 14:47:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-09-25 14:47:47,151 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 58 [2020-09-25 14:47:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:47,151 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-09-25 14:47:47,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:47:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-09-25 14:47:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 14:47:47,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:47,154 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-09-25 14:47:47,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:47:47,154 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1733407875, now seen corresponding path program 1 times [2020-09-25 14:47:47,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:47,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263006535] [2020-09-25 14:47:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:47:48,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-09-25 14:47:48,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:47:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:47:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 14:47:48,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:48,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:48,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:48,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:48,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:48,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:48,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:48,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:48,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:48,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:48,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 14:47:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:48,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 14:47:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:48,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:48,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 14:47:48,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263006535] [2020-09-25 14:47:48,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:48,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:47:48,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035066891] [2020-09-25 14:47:48,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:47:48,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:48,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:47:48,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:48,539 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 9 states. [2020-09-25 14:47:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:48,794 INFO L93 Difference]: Finished difference Result 158 states and 182 transitions. [2020-09-25 14:47:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:47:48,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-25 14:47:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:48,797 INFO L225 Difference]: With dead ends: 158 [2020-09-25 14:47:48,797 INFO L226 Difference]: Without dead ends: 156 [2020-09-25 14:47:48,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:48,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-25 14:47:48,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2020-09-25 14:47:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 14:47:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2020-09-25 14:47:48,816 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 62 [2020-09-25 14:47:48,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:48,816 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2020-09-25 14:47:48,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:47:48,817 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2020-09-25 14:47:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 14:47:48,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:48,819 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:48,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:47:48,820 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:48,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1967257859, now seen corresponding path program 1 times [2020-09-25 14:47:48,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:48,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976851848] [2020-09-25 14:47:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:53,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:47:53,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:47:53,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:53,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:47:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:47:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:47:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:47:53,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:53,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:53,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:53,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:53,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:53,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:47:53,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:53,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:53,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:53,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:53,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:47:53,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:53,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:47:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:53,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:53,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:47:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:53,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:47:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:47:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:54,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 14:47:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:54,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 14:47:54,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976851848] [2020-09-25 14:47:54,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:47:54,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:47:54,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476335756] [2020-09-25 14:47:54,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:47:54,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:54,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:47:54,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:54,028 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand 10 states. [2020-09-25 14:47:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:54,285 INFO L93 Difference]: Finished difference Result 155 states and 178 transitions. [2020-09-25 14:47:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:47:54,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 14:47:54,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:54,288 INFO L225 Difference]: With dead ends: 155 [2020-09-25 14:47:54,289 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 14:47:54,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 14:47:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-09-25 14:47:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-25 14:47:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 176 transitions. [2020-09-25 14:47:54,308 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 176 transitions. Word has length 63 [2020-09-25 14:47:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:54,308 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 176 transitions. [2020-09-25 14:47:54,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:47:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 176 transitions. [2020-09-25 14:47:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 14:47:54,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:54,310 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-09-25 14:47:54,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:47:54,310 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:54,311 INFO L82 PathProgramCache]: Analyzing trace with hash -822659134, now seen corresponding path program 1 times [2020-09-25 14:47:54,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:54,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070178951] [2020-09-25 14:47:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:55,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:55,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:47:55,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:55,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-09-25 14:47:55,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:55,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:47:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:47:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 14:47:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:55,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:55,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:55,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:55,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:55,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:55,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:55,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:55,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:55,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:55,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:55,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:55,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:55,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:55,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:55,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:55,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:55,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:55,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:55,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:55,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:47:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:55,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:55,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:55,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:55,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:55,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:55,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:47:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:55,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:55,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:55,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:55,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:55,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:55,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:55,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:55,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 14:47:55,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070178951] [2020-09-25 14:47:55,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:55,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:47:55,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544578494] [2020-09-25 14:47:55,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:47:55,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:55,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:47:55,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:55,781 INFO L87 Difference]: Start difference. First operand 153 states and 176 transitions. Second operand 9 states. [2020-09-25 14:47:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:56,013 INFO L93 Difference]: Finished difference Result 188 states and 218 transitions. [2020-09-25 14:47:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:47:56,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-25 14:47:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:56,016 INFO L225 Difference]: With dead ends: 188 [2020-09-25 14:47:56,016 INFO L226 Difference]: Without dead ends: 186 [2020-09-25 14:47:56,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-25 14:47:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2020-09-25 14:47:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 14:47:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2020-09-25 14:47:56,037 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 65 [2020-09-25 14:47:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:56,037 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2020-09-25 14:47:56,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:47:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2020-09-25 14:47:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:47:56,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:56,039 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2020-09-25 14:47:56,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:47:56,039 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:56,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1510377470, now seen corresponding path program 1 times [2020-09-25 14:47:56,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:56,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210825201] [2020-09-25 14:47:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:56,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3603 [2020-09-25 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:47:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:47:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:59,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:59,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:59,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:59,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:59,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:59,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:59,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:47:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:59,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:59,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:47:59,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:59,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:59,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:59,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:59,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:47:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:59,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:59,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:59,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:59,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:59,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 14:47:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:59,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:59,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:59,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:59,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:59,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 14:47:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:59,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:59,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:59,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:59,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:59,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:59,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:47:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:47:59,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:47:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:59,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:59,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:59,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:59,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:59,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 14:47:59,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210825201] [2020-09-25 14:47:59,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:47:59,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:47:59,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887345354] [2020-09-25 14:47:59,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:47:59,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:59,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:47:59,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:59,810 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 10 states. [2020-09-25 14:48:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:00,059 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2020-09-25 14:48:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:48:00,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 14:48:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:00,062 INFO L225 Difference]: With dead ends: 187 [2020-09-25 14:48:00,063 INFO L226 Difference]: Without dead ends: 182 [2020-09-25 14:48:00,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:48:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-25 14:48:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-09-25 14:48:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-25 14:48:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2020-09-25 14:48:00,088 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 67 [2020-09-25 14:48:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:00,088 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2020-09-25 14:48:00,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:48:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2020-09-25 14:48:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 14:48:00,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:00,092 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2020-09-25 14:48:00,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:48:00,093 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:00,093 INFO L82 PathProgramCache]: Analyzing trace with hash 869213219, now seen corresponding path program 2 times [2020-09-25 14:48:00,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:00,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890265403] [2020-09-25 14:48:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4242 [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:48:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:48:04,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:48:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:48:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:04,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:48:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:04,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:04,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:48:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:04,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:48:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:04,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:48:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:48:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 14:48:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 14:48:04,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890265403] [2020-09-25 14:48:04,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:04,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:48:04,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395184291] [2020-09-25 14:48:04,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:48:04,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:48:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:48:04,502 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand 9 states. [2020-09-25 14:48:04,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:04,738 INFO L93 Difference]: Finished difference Result 186 states and 214 transitions. [2020-09-25 14:48:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:48:04,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-25 14:48:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:04,740 INFO L225 Difference]: With dead ends: 186 [2020-09-25 14:48:04,741 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 14:48:04,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:48:04,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 14:48:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-09-25 14:48:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-25 14:48:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 206 transitions. [2020-09-25 14:48:04,765 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 206 transitions. Word has length 70 [2020-09-25 14:48:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:04,765 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 206 transitions. [2020-09-25 14:48:04,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:48:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 206 transitions. [2020-09-25 14:48:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 14:48:04,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:04,768 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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] [2020-09-25 14:48:04,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:48:04,769 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:04,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:04,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1269119089, now seen corresponding path program 1 times [2020-09-25 14:48:04,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:04,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554071057] [2020-09-25 14:48:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 14:48:09,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:48:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:48:09,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:48:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:48:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 14:48:09,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:09,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:09,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:48:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:48:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:09,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:48:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:09,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:48:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:09,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:09,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:09,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:09,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:09,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 14:48:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:09,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:09,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:09,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:09,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 14:48:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:09,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:09,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:09,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:09,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:48:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:09,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:09,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:09,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 14:48:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:09,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:09,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 14:48:09,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554071057] [2020-09-25 14:48:09,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:09,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 14:48:09,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766926806] [2020-09-25 14:48:09,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:48:09,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:09,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:48:09,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:48:09,973 INFO L87 Difference]: Start difference. First operand 181 states and 206 transitions. Second operand 11 states. [2020-09-25 14:48:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:10,260 INFO L93 Difference]: Finished difference Result 199 states and 225 transitions. [2020-09-25 14:48:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:48:10,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-09-25 14:48:10,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:10,262 INFO L225 Difference]: With dead ends: 199 [2020-09-25 14:48:10,263 INFO L226 Difference]: Without dead ends: 197 [2020-09-25 14:48:10,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:48:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-25 14:48:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 181. [2020-09-25 14:48:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-25 14:48:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 206 transitions. [2020-09-25 14:48:10,277 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 206 transitions. Word has length 76 [2020-09-25 14:48:10,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:10,278 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 206 transitions. [2020-09-25 14:48:10,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:48:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 206 transitions. [2020-09-25 14:48:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 14:48:10,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:10,279 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1] [2020-09-25 14:48:10,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 14:48:10,280 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1147260786, now seen corresponding path program 1 times [2020-09-25 14:48:10,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:10,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593442890] [2020-09-25 14:48:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4974 [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 14:48:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:15,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:48:15,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:15,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:48:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:15,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:48:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:15,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:15,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:48:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:15,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:48:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:15,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:15,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 14:48:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:15,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 14:48:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:15,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 14:48:15,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593442890] [2020-09-25 14:48:15,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:15,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 14:48:15,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705507574] [2020-09-25 14:48:15,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:48:15,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:48:15,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:48:15,448 INFO L87 Difference]: Start difference. First operand 181 states and 206 transitions. Second operand 11 states. [2020-09-25 14:48:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:15,797 INFO L93 Difference]: Finished difference Result 223 states and 256 transitions. [2020-09-25 14:48:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:48:15,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 14:48:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:15,799 INFO L225 Difference]: With dead ends: 223 [2020-09-25 14:48:15,799 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 14:48:15,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:48:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 14:48:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2020-09-25 14:48:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-25 14:48:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 168 transitions. [2020-09-25 14:48:15,809 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 168 transitions. Word has length 79 [2020-09-25 14:48:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:15,809 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 168 transitions. [2020-09-25 14:48:15,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:48:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 168 transitions. [2020-09-25 14:48:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 14:48:15,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:15,811 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1] [2020-09-25 14:48:15,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 14:48:15,811 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:15,811 INFO L82 PathProgramCache]: Analyzing trace with hash 341113206, now seen corresponding path program 2 times [2020-09-25 14:48:15,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:15,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138495847] [2020-09-25 14:48:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:20,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:20,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 14:48:20,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:48:20,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:48:20,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:20,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:20,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:48:20,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:48:20,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 14:48:20,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:20,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:20,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:20,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:20,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:48:20,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:20,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:20,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:20,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:48:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:20,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:20,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:20,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:20,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:20,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:20,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:20,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:20,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:48:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:20,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:20,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:48:20,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:20,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 14:48:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:20,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:20,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:20,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:20,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:20,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:48:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:20,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:20,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:20,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:20,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:20,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:20,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:20,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 14:48:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:21,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:21,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:21,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:21,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:21,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:21,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:21,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:21,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:21,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 14:48:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:21,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:21,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:21,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:21,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 14:48:21,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138495847] [2020-09-25 14:48:21,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:21,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 14:48:21,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771016033] [2020-09-25 14:48:21,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:48:21,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:21,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:48:21,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:48:21,043 INFO L87 Difference]: Start difference. First operand 151 states and 168 transitions. Second operand 11 states. [2020-09-25 14:48:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:21,346 INFO L93 Difference]: Finished difference Result 198 states and 223 transitions. [2020-09-25 14:48:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:48:21,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 14:48:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:21,347 INFO L225 Difference]: With dead ends: 198 [2020-09-25 14:48:21,348 INFO L226 Difference]: Without dead ends: 129 [2020-09-25 14:48:21,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:48:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-25 14:48:21,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2020-09-25 14:48:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-25 14:48:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 141 transitions. [2020-09-25 14:48:21,359 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 141 transitions. Word has length 79 [2020-09-25 14:48:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:21,360 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 141 transitions. [2020-09-25 14:48:21,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:48:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 141 transitions. [2020-09-25 14:48:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 14:48:21,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:21,361 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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 14:48:21,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 14:48:21,362 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:21,362 INFO L82 PathProgramCache]: Analyzing trace with hash -343631243, now seen corresponding path program 1 times [2020-09-25 14:48:21,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:21,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668577970] [2020-09-25 14:48:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:26,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 14:48:26,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:48:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:48:26,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:26,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:48:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 14:48:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 14:48:26,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:26,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:26,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:26,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:26,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:26,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:48:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:26,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:26,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:26,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:26,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 14:48:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:26,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:26,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:26,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:26,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:26,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 14:48:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:26,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:26,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:48:26,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:26,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:48:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:48:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 14:48:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:26,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:26,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:26,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:26,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:26,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:48:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:26,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:26,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:26,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 14:48:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:26,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:26,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:26,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:26,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:26,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:26,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:26,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 14:48:26,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668577970] [2020-09-25 14:48:26,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:26,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:48:26,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674631996] [2020-09-25 14:48:26,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:48:26,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:26,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:48:26,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:48:26,553 INFO L87 Difference]: Start difference. First operand 127 states and 141 transitions. Second operand 10 states. [2020-09-25 14:48:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:26,813 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-09-25 14:48:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:48:26,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-09-25 14:48:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:26,814 INFO L225 Difference]: With dead ends: 157 [2020-09-25 14:48:26,815 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 14:48:26,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:48:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 14:48:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 146. [2020-09-25 14:48:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 14:48:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2020-09-25 14:48:26,827 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 83 [2020-09-25 14:48:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:26,828 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2020-09-25 14:48:26,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:48:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2020-09-25 14:48:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 14:48:26,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:26,831 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:48:26,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 14:48:26,832 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:26,832 INFO L82 PathProgramCache]: Analyzing trace with hash 813915649, now seen corresponding path program 1 times [2020-09-25 14:48:26,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:26,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64618834] [2020-09-25 14:48:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:27,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:27,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking...