/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:08:54,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:08:54,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:08:54,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:08:54,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:08:54,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:08:54,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:08:54,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:08:54,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:08:54,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:08:54,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:08:54,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:08:54,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:08:54,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:08:54,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:08:54,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:08:54,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:08:54,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:08:54,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:08:54,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:08:54,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:08:54,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:08:54,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:08:54,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:08:54,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:08:54,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:08:54,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:08:54,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:08:54,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:08:54,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:08:54,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:08:54,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:08:54,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:08:54,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:08:54,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:08:54,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:08:54,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:08:54,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:08:54,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:08:54,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:08:54,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:08:54,615 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 11:08:54,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:08:54,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:08:54,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:08:54,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:08:54,654 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:08:54,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:08:54,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:08:54,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:08:54,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:08:54,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:08:54,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:08:54,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:08:54,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:08:54,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:08:54,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:08:54,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:08:54,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:08:54,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:08:54,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:08:54,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:08:54,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:08:54,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:08:54,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:08:54,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:08:54,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:08:54,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:08:54,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:08:54,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:08:54,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:08:54,661 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:08:55,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:08:55,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:08:55,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:08:55,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:08:55,159 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:08:55,160 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 11:08:55,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80385b36c/8d1a7454edcc484a9a588111da4cfd60/FLAG312dae059 [2020-09-25 11:08:55,804 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:08:55,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 11:08:55,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80385b36c/8d1a7454edcc484a9a588111da4cfd60/FLAG312dae059 [2020-09-25 11:08:56,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80385b36c/8d1a7454edcc484a9a588111da4cfd60 [2020-09-25 11:08:56,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:08:56,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:08:56,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:08:56,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:08:56,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:08:56,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7d2fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56, skipping insertion in model container [2020-09-25 11:08:56,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:08:56,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:08:56,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:08:56,462 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:08:56,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:08:56,501 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:08:56,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56 WrapperNode [2020-09-25 11:08:56,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:08:56,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:08:56,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:08:56,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:08:56,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (1/1) ... [2020-09-25 11:08:56,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:08:56,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:08:56,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:08:56,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:08:56,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (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 11:08:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:08:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:08:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 11:08:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:08:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:08:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:08:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 11:08:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:08:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:08:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:08:56,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:08:56,894 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:08:56,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:08:56 BoogieIcfgContainer [2020-09-25 11:08:56,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:08:56,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:08:56,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:08:56,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:08:56,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:08:56" (1/3) ... [2020-09-25 11:08:56,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2013459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:08:56, skipping insertion in model container [2020-09-25 11:08:56,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:56" (2/3) ... [2020-09-25 11:08:56,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2013459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:08:56, skipping insertion in model container [2020-09-25 11:08:56,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:08:56" (3/3) ... [2020-09-25 11:08:56,911 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i10_o10-1.c [2020-09-25 11:08:56,924 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:08:56,936 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:08:56,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:08:57,051 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:08:57,051 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:08:57,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:08:57,052 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:08:57,052 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:08:57,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:08:57,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:08:57,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:08:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 11:08:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:08:57,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:57,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:57,083 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:57,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:57,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 11:08:57,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:57,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366044417] [2020-09-25 11:08:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:57,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:57,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:57,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:08:57,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 11:08:57,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:57,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:08:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:08:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:08:57,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:57,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:57,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:57,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:57,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:57,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:57,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:57,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:57,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:57,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:57,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:57,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:57,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:57,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:08:57,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:57,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:57,629 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 11:08:57,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366044417] [2020-09-25 11:08:57,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:08:57,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:08:57,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642692346] [2020-09-25 11:08:57,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:08:57,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:57,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:08:57,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:08:57,661 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 11:08:57,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:57,759 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 11:08:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:08:57,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:08:57,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:57,787 INFO L225 Difference]: With dead ends: 37 [2020-09-25 11:08:57,788 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 11:08:57,793 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 11:08:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 11:08:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 11:08:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 11:08:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 11:08:57,867 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 11:08:57,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:57,868 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 11:08:57,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:08:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 11:08:57,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 11:08:57,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:57,872 INFO L422 BasicCegarLoop]: trace histogram [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 11:08:57,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:08:57,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 11:08:57,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:57,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703857230] [2020-09-25 11:08:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:57,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:57,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:58,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:08:58,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-09-25 11:08:58,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:58,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:08:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:08:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:58,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:58,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:58,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:58,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:58,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:08:58,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:58,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 11:08:58,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:58,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:08:58,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:58,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:58,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:58,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:08:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:58,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:08:58,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703857230] [2020-09-25 11:08:58,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:58,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:58,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833029951] [2020-09-25 11:08:58,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:58,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:58,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:58,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:58,547 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 11:08:58,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:58,660 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 11:08:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:08:58,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 11:08:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:58,664 INFO L225 Difference]: With dead ends: 34 [2020-09-25 11:08:58,665 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 11:08:58,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 11:08:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 11:08:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:08:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 11:08:58,682 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 11:08:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:58,683 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 11:08:58,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 11:08:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 11:08:58,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:58,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:58,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:08:58,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:58,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 11:08:58,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:58,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406085302] [2020-09-25 11:08:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:58,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:59,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:59,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 11:08:59,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-09-25 11:08:59,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:59,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 11:08:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:08:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:59,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:59,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:59,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:59,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:59,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:59,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:59,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:59,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:08:59,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:59,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 11:08:59,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:59,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:08:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:59,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:59,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:59,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:08:59,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:59,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:08:59,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:59,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:08:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:08:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:59,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:59,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:59,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:08:59,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:59,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:59,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:08:59,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:59,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:08:59,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:08:59,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406085302] [2020-09-25 11:08:59,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:59,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:08:59,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507106779] [2020-09-25 11:08:59,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:08:59,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:59,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:08:59,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:59,568 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 11:08:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:59,652 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 11:08:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:08:59,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 11:08:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:59,654 INFO L225 Difference]: With dead ends: 39 [2020-09-25 11:08:59,654 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 11:08:59,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:08:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 11:08:59,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 11:08:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 11:08:59,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 11:08:59,662 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 11:08:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:59,663 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 11:08:59,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:08:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 11:08:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 11:08:59,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:59,665 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:59,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:08:59,666 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:59,666 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 11:08:59,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:59,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520271387] [2020-09-25 11:08:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:09:00,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:00,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-09-25 11:09:00,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:09:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 11:09:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:09:00,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:00,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:00,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:00,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 11:09:00,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:00,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 11:09:00,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:00,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 11:09:00,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:00,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:01,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:09:01,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:01,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:09:01,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520271387] [2020-09-25 11:09:01,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:01,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:09:01,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284334437] [2020-09-25 11:09:01,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:09:01,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:01,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:09:01,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:09:01,035 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 11:09:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:01,150 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 11:09:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:09:01,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 11:09:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:01,154 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:09:01,154 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 11:09:01,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 11:09:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 11:09:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 11:09:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 11:09:01,167 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 11:09:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:01,168 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 11:09:01,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:09:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 11:09:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 11:09:01,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:01,172 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:01,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:09:01,173 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:01,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:01,173 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 11:09:01,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:01,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908911065] [2020-09-25 11:09:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:02,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:02,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-09-25 11:09:02,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:09:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 11:09:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 11:09:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:02,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:02,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:02,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:02,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:02,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 11:09:02,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:02,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:02,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:03,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 11:09:03,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:03,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:03,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 11:09:03,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:03,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:03,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:09:03,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:03,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:09:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:09:03,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908911065] [2020-09-25 11:09:03,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:03,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:09:03,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913167219] [2020-09-25 11:09:03,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:09:03,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:03,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:09:03,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:09:03,340 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 11:09:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:03,490 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 11:09:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:09:03,490 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 11:09:03,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:03,492 INFO L225 Difference]: With dead ends: 49 [2020-09-25 11:09:03,492 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 11:09:03,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:09:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 11:09:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 11:09:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 11:09:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 11:09:03,502 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 11:09:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:03,502 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 11:09:03,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:09:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 11:09:03,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 11:09:03,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:03,504 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:03,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:09:03,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:03,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:03,505 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 11:09:03,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:03,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621299896] [2020-09-25 11:09:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:09:05,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2179 [2020-09-25 11:09:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:09:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 11:09:05,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:09:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:05,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:05,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:05,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:05,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:05,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 11:09:05,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 11:09:06,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:06,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:06,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 11:09:06,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:06,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:09:06,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:06,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:09:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:06,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:09:06,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:06,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 11:09:06,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621299896] [2020-09-25 11:09:06,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:06,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:09:06,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763064165] [2020-09-25 11:09:06,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:09:06,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:06,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:09:06,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:06,628 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 11:09:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:06,801 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 11:09:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:09:06,801 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 11:09:06,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:06,803 INFO L225 Difference]: With dead ends: 54 [2020-09-25 11:09:06,803 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 11:09:06,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:09:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 11:09:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 11:09:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 11:09:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 11:09:06,812 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 11:09:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:06,812 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 11:09:06,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:09:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 11:09:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 11:09:06,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:06,814 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:06,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:09:06,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 11:09:06,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:06,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464974484] [2020-09-25 11:09:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:09:09,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:09,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2793 [2020-09-25 11:09:09,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:09:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 11:09:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 11:09:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:09,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:09,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:09,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:09,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:09,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 11:09:09,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:09:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:10,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 11:09:10,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:10,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 11:09:10,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:10,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:10,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 11:09:10,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:10,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:09:10,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:10,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:10,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:10,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:09:10,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:10,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:10,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 11:09:10,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464974484] [2020-09-25 11:09:10,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:10,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 11:09:10,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799301200] [2020-09-25 11:09:10,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 11:09:10,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:10,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 11:09:10,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:09:10,911 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 11:09:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:11,087 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 11:09:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 11:09:11,087 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 11:09:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:11,089 INFO L225 Difference]: With dead ends: 59 [2020-09-25 11:09:11,089 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 11:09:11,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 11:09:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 11:09:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 11:09:11,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 11:09:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 11:09:11,097 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 11:09:11,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:11,097 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 11:09:11,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 11:09:11,098 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 11:09:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 11:09:11,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:11,099 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:11,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:09:11,099 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:11,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:11,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 11:09:11,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:11,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645453925] [2020-09-25 11:09:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:11,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:14,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:14,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 11:09:14,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3555 [2020-09-25 11:09:14,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:14,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:09:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:14,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 11:09:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:14,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:14,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:14,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:14,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:14,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:15,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:15,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:15,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 11:09:15,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:15,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:09:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:09:15,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:15,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:15,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:15,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-25 11:09:15,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:15,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:09:15,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:15,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:15,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:15,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 11:09:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:15,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:15,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:15,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:15,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 11:09:15,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:15,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:15,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:15,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:15,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:15,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:15,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 11:09:15,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:15,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:15,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:16,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 11:09:16,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:16,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:09:16,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:16,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:16,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:09:16,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:16,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 7 proven. 131 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-25 11:09:16,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645453925] [2020-09-25 11:09:16,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:16,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:09:16,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316311723] [2020-09-25 11:09:16,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:09:16,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:16,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:09:16,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:09:16,276 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 14 states. [2020-09-25 11:09:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:16,444 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 11:09:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:09:16,445 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 11:09:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:16,446 INFO L225 Difference]: With dead ends: 64 [2020-09-25 11:09:16,447 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 11:09:16,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:09:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 11:09:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 11:09:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 11:09:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 11:09:16,454 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 11:09:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:16,455 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 11:09:16,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:09:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 11:09:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 11:09:16,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:16,456 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:16,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:09:16,457 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 11:09:16,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:16,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061551894] [2020-09-25 11:09:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 11:09:20,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:20,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4498 [2020-09-25 11:09:20,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:09:20,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 11:09:20,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 11:09:20,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:21,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:21,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:21,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:21,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-09-25 11:09:21,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:09:21,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:21,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 11:09:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:09:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:22,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 11:09:22,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:09:22,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 11:09:22,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 11:09:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:22,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:22,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 11:09:22,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:22,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 11:09:22,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:22,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:09:22,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:22,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:22,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:22,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 11:09:22,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061551894] [2020-09-25 11:09:22,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:22,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 11:09:22,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308988818] [2020-09-25 11:09:22,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 11:09:22,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:22,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 11:09:22,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:09:22,937 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 11:09:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:23,100 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 11:09:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 11:09:23,101 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 11:09:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:23,102 INFO L225 Difference]: With dead ends: 69 [2020-09-25 11:09:23,102 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 11:09:23,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:09:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 11:09:23,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 11:09:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 11:09:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 11:09:23,110 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 11:09:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:23,110 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 11:09:23,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 11:09:23,110 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 11:09:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 11:09:23,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:23,111 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:23,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:09:23,112 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:23,112 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 11:09:23,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:23,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353558602] [2020-09-25 11:09:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 11:09:28,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:09:28,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:09:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:28,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:28,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:28,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:28,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 11:09:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:09:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 11:09:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:28,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:29,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 11:09:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 11:09:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:29,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:29,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 11:09:29,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:29,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:29,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 11:09:29,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:09:29,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:29,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 11:09:29,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 11:09:30,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:30,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:30,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 11:09:30,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:30,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 11:09:30,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:30,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:30,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:30,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:09:30,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:30,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:30,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:09:30,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 16 proven. 226 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-25 11:09:30,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353558602] [2020-09-25 11:09:30,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:30,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:09:30,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855386272] [2020-09-25 11:09:30,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:09:30,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:30,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:09:30,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:30,473 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 15 states. [2020-09-25 11:09:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:30,670 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 11:09:30,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:09:30,671 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-09-25 11:09:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:30,672 INFO L225 Difference]: With dead ends: 74 [2020-09-25 11:09:30,672 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 11:09:30,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:09:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 11:09:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 11:09:30,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 11:09:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 11:09:30,679 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 11:09:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:30,680 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 11:09:30,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:09:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 11:09:30,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 11:09:30,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:30,681 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:30,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:09:30,682 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 11:09:30,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:30,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666927166] [2020-09-25 11:09:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:09:30,698 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:09:30,698 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:09:30,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:09:30,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:09:30 BoogieIcfgContainer [2020-09-25 11:09:30,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:09:30,742 INFO L168 Benchmark]: Toolchain (without parser) took 34561.95 ms. Allocated memory was 138.9 MB in the beginning and 430.4 MB in the end (delta: 291.5 MB). Free memory was 101.8 MB in the beginning and 213.0 MB in the end (delta: -111.2 MB). Peak memory consumption was 180.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:30,743 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:09:30,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.06 ms. Allocated memory is still 138.9 MB. Free memory was 101.1 MB in the beginning and 91.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:30,749 INFO L168 Benchmark]: Boogie Preprocessor took 33.21 ms. Allocated memory is still 138.9 MB. Free memory was 91.9 MB in the beginning and 90.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:30,751 INFO L168 Benchmark]: RCFGBuilder took 364.56 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.6 MB in the beginning and 169.1 MB in the end (delta: -78.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:30,752 INFO L168 Benchmark]: TraceAbstraction took 33836.59 ms. Allocated memory was 201.3 MB in the beginning and 430.4 MB in the end (delta: 229.1 MB). Free memory was 169.1 MB in the beginning and 213.0 MB in the end (delta: -43.9 MB). Peak memory consumption was 185.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:30,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.06 ms. Allocated memory is still 138.9 MB. Free memory was 101.1 MB in the beginning and 91.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.21 ms. Allocated memory is still 138.9 MB. Free memory was 91.9 MB in the beginning and 90.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.56 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.6 MB in the beginning and 169.1 MB in the end (delta: -78.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33836.59 ms. Allocated memory was 201.3 MB in the beginning and 430.4 MB in the end (delta: 229.1 MB). Free memory was 169.1 MB in the beginning and 213.0 MB in the end (delta: -43.9 MB). Peak memory consumption was 185.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 10; [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.6s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 264 SDslu, 1034 SDs, 0 SdLazy, 405 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.5s InterpolantComputationTime, 616 NumberOfCodeBlocks, 616 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 75131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 410/1140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...