/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=0.1 --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 10:01:37,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:01:37,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:01:37,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:01:37,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:01:37,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:01:37,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:01:37,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:01:37,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:01:37,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:01:37,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:01:37,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:01:37,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:01:37,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:01:37,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:01:37,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:01:37,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:01:37,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:01:37,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:01:37,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:01:37,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:01:37,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:01:37,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:01:37,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:01:37,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:01:37,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:01:37,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:01:37,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:01:37,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:01:37,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:01:37,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:01:37,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:01:37,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:01:37,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:01:37,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:01:37,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:01:37,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:01:37,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:01:37,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:01:37,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:01:37,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:01:37,693 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 10:01:37,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:01:37,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:01:37,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:01:37,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:01:37,745 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:01:37,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:01:37,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:01:37,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:01:37,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:01:37,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:01:37,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:01:37,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:01:37,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:01:37,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:01:37,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:01:37,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:01:37,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:01:37,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:01:37,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:01:37,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:01:37,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:01:37,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:01:37,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:01:37,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:01:37,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:01:37,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:01:37,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:01:37,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:01:37,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:01:37,754 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:01:38,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:01:38,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:01:38,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:01:38,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:01:38,233 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:01:38,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 10:01:38,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f989332c1/31c8d8704d574051b979bbd19fb0528b/FLAG0e3aeacc3 [2020-09-25 10:01:38,880 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:01:38,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i10_o10-1.c [2020-09-25 10:01:38,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f989332c1/31c8d8704d574051b979bbd19fb0528b/FLAG0e3aeacc3 [2020-09-25 10:01:39,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f989332c1/31c8d8704d574051b979bbd19fb0528b [2020-09-25 10:01:39,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:01:39,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:01:39,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:39,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:01:39,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:01:39,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7a3765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39, skipping insertion in model container [2020-09-25 10:01:39,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:01:39,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:01:39,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:39,576 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:01:39,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:39,614 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:01:39,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39 WrapperNode [2020-09-25 10:01:39,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:39,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:01:39,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:01:39,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:01:39,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (1/1) ... [2020-09-25 10:01:39,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:01:39,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:01:39,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:01:39,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:01:39,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (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 10:01:39,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:01:39,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:01:39,815 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 10:01:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:01:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:01:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:01:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 10:01:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:01:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:01:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:01:40,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:01:40,007 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:01:40,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:40 BoogieIcfgContainer [2020-09-25 10:01:40,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:01:40,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:01:40,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:01:40,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:01:40,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:01:39" (1/3) ... [2020-09-25 10:01:40,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4082244b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:40, skipping insertion in model container [2020-09-25 10:01:40,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:39" (2/3) ... [2020-09-25 10:01:40,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4082244b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:40, skipping insertion in model container [2020-09-25 10:01:40,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:40" (3/3) ... [2020-09-25 10:01:40,023 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i10_o10-1.c [2020-09-25 10:01:40,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:01:40,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:01:40,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:01:40,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:01:40,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:01:40,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:01:40,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:01:40,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:01:40,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:01:40,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:01:40,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:01:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 10:01:40,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:01:40,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:40,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:40,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 10:01:40,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:40,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544547658] [2020-09-25 10:01:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:40,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:01:40,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 10:01:40,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:40,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:01:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:40,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:01:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:40,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:40,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:40,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:40,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:40,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:40,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:40,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:40,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:40,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:01:40,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:40,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:40,710 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 10:01:40,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544547658] [2020-09-25 10:01:40,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:01:40,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:01:40,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532068140] [2020-09-25 10:01:40,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:01:40,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:40,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:01:40,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:01:40,745 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 10:01:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:40,840 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 10:01:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:01:40,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:01:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:40,858 INFO L225 Difference]: With dead ends: 37 [2020-09-25 10:01:40,858 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 10:01:40,863 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 10:01:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 10:01:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 10:01:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 10:01:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 10:01:40,919 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 10:01:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:40,920 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 10:01:40,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:01:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 10:01:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 10:01:40,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:40,923 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 10:01:40,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:01:40,924 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:40,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 10:01:40,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:40,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659225382] [2020-09-25 10:01:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:40,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:41,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 10:01:41,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 10:01:41,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:41,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:01:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:01:41,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:41,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:41,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:41,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:01:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:41,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:41,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:41,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:41,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 10:01:41,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:41,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:41,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:41,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:01:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:41,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:41,666 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 10:01:41,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659225382] [2020-09-25 10:01:41,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:41,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:01:41,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530207563] [2020-09-25 10:01:41,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:01:41,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:41,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:01:41,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:01:41,678 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 10:01:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:41,774 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 10:01:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:01:41,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 10:01:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:41,778 INFO L225 Difference]: With dead ends: 34 [2020-09-25 10:01:41,778 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 10:01:41,780 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 10:01:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 10:01:41,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 10:01:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 10:01:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 10:01:41,813 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 10:01:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:41,814 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 10:01:41,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:01:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 10:01:41,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 10:01:41,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:41,818 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 10:01:41,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:01:41,819 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:41,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:41,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 10:01:41,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:41,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873885684] [2020-09-25 10:01:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:41,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:42,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 10:01:42,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:42,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-25 10:01:42,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:42,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 10:01:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:01:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:42,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:01:42,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:42,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:42,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:42,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:42,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 10:01:42,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:42,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:42,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:42,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:42,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 10:01:42,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:42,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:42,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:42,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:42,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:42,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:42,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:42,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:01:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:42,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:01:42,694 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 10:01:42,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873885684] [2020-09-25 10:01:42,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:42,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:01:42,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986558852] [2020-09-25 10:01:42,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:01:42,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:42,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:01:42,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:01:42,699 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 10:01:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:42,781 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 10:01:42,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:01:42,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 10:01:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:42,784 INFO L225 Difference]: With dead ends: 39 [2020-09-25 10:01:42,784 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 10:01:42,785 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 10:01:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 10:01:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 10:01:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 10:01:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 10:01:42,792 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 10:01:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:42,792 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 10:01:42,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:01:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 10:01:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 10:01:42,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:42,794 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 10:01:42,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:01:42,795 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:42,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:42,795 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 10:01:42,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:42,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378487847] [2020-09-25 10:01:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:43,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:01:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-09-25 10:01:43,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:43,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 10:01:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 10:01:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:43,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:43,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:43,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:43,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:43,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:43,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:43,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:43,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:43,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:43,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 10:01:43,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:43,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:43,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:43,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:43,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:43,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:01:43,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:43,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:43,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:43,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:43,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:01:43,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:43,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:44,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:44,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:44,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:01:44,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:44,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:44,060 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 10:01:44,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378487847] [2020-09-25 10:01:44,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:44,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:01:44,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455924779] [2020-09-25 10:01:44,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:01:44,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:44,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:01:44,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:01:44,063 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 10:01:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:44,168 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 10:01:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:01:44,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 10:01:44,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:44,171 INFO L225 Difference]: With dead ends: 44 [2020-09-25 10:01:44,171 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 10:01:44,172 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 10:01:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 10:01:44,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 10:01:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 10:01:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 10:01:44,179 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 10:01:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:44,180 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 10:01:44,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:01:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 10:01:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 10:01:44,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:44,182 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 10:01:44,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:01:44,182 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:44,183 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 10:01:44,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:44,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44614039] [2020-09-25 10:01:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:45,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:01:45,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-09-25 10:01:45,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:45,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:01:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 10:01:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:01:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:45,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:45,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:45,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:45,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:45,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:45,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 10:01:45,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:45,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:01:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:01:45,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:45,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:45,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:45,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 10:01:45,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:45,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:46,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:46,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 10:01:46,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:46,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:46,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:01:46,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:46,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:46,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:46,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:01:46,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:46,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:46,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:46,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:01:46,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:46,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:46,183 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 10:01:46,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44614039] [2020-09-25 10:01:46,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:46,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:01:46,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146898100] [2020-09-25 10:01:46,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:01:46,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:46,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:01:46,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:01:46,186 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 10:01:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:46,312 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 10:01:46,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:01:46,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 10:01:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:46,314 INFO L225 Difference]: With dead ends: 49 [2020-09-25 10:01:46,314 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 10:01:46,315 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 10:01:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 10:01:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 10:01:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 10:01:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 10:01:46,329 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 10:01:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:46,330 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 10:01:46,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:01:46,331 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 10:01:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 10:01:46,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:46,334 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 10:01:46,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:01:46,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:46,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:46,338 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 10:01:46,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:46,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130635349] [2020-09-25 10:01:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:46,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:48,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:48,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:01:48,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:48,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2115 [2020-09-25 10:01:48,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:48,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:48,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:01:48,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:01:48,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:01:48,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:48,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:48,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:48,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:48,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:48,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:48,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:48,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:48,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:01:48,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 10:01:48,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:48,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:01:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:01:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:48,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:48,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 10:01:48,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:48,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:01:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:49,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 10:01:49,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:49,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 10:01:49,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:01:49,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:49,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:01:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:49,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:49,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:49,294 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 10:01:49,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130635349] [2020-09-25 10:01:49,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:49,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:01:49,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628329972] [2020-09-25 10:01:49,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:01:49,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:49,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:01:49,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:01:49,297 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 10:01:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:49,464 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 10:01:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:01:49,464 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 10:01:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:49,466 INFO L225 Difference]: With dead ends: 54 [2020-09-25 10:01:49,466 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 10:01:49,467 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 10:01:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 10:01:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 10:01:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 10:01:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 10:01:49,474 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 10:01:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:49,475 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 10:01:49,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:01:49,475 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 10:01:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 10:01:49,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:49,476 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 10:01:49,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:01:49,477 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 10:01:49,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:49,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316646126] [2020-09-25 10:01:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:01:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2749 [2020-09-25 10:01:52,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:01:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 10:01:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:01:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:52,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:52,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:52,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:01:52,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 10:01:52,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:01:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:01:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:52,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:52,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:01:52,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:52,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 10:01:52,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:52,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:01:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:01:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:52,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:53,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 10:01:53,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:53,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:01:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:01:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:53,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:53,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:53,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 10:01:53,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:53,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:53,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:53,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:53,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:53,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:53,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:53,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 10:01:53,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:53,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:53,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:53,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:01:53,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:53,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:53,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:53,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:53,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:53,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:01:53,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:53,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:53,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:53,475 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 10:01:53,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316646126] [2020-09-25 10:01:53,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:53,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:01:53,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561422928] [2020-09-25 10:01:53,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:01:53,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:01:53,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:01:53,480 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 10:01:53,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:53,658 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 10:01:53,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:01:53,659 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 10:01:53,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:53,664 INFO L225 Difference]: With dead ends: 59 [2020-09-25 10:01:53,664 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 10:01:53,665 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 10:01:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 10:01:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 10:01:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 10:01:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 10:01:53,678 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 10:01:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:53,678 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 10:01:53,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:01:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 10:01:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 10:01:53,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:53,682 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 10:01:53,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:01:53,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 10:01:53,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:53,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920522553] [2020-09-25 10:01:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:57,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 10:01:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3624 [2020-09-25 10:01:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:57,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:01:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:01:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:57,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:57,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:57,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:57,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:57,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:57,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:57,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:57,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:57,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:01:57,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 10:01:57,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:57,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:01:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:01:57,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:58,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:01:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 10:01:58,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:58,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:01:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 10:01:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:58,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:58,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:58,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:58,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:01:58,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 10:01:58,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:58,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:01:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:58,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 10:01:58,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:58,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:58,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:58,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:58,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 10:01:58,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:58,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:01:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:01:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:58,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:58,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:58,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:58,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:58,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 10:01:58,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:58,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:01:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:58,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:58,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:58,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:58,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 10:01:58,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:58,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:58,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:58,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:58,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:58,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:58,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:58,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:58,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:58,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:01:58,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:58,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:58,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:58,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:01:58,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:58,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:58,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:58,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:58,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:58,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:58,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:58,964 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 10:01:58,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920522553] [2020-09-25 10:01:58,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:58,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:01:58,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457078110] [2020-09-25 10:01:58,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:01:58,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:58,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:01:58,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:01:58,967 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 14 states. [2020-09-25 10:01:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:59,139 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 10:01:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:01:59,140 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 10:01:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:59,141 INFO L225 Difference]: With dead ends: 64 [2020-09-25 10:01:59,142 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 10:01:59,143 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 10:01:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 10:01:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 10:01:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 10:01:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 10:01:59,150 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 10:01:59,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:59,150 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 10:01:59,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:01:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 10:01:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 10:01:59,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:59,152 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 10:01:59,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:01:59,153 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 10:01:59,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:59,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816818677] [2020-09-25 10:01:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:59,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:03,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:03,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 10:02:03,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:03,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4414 [2020-09-25 10:02:03,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:03,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:03,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:02:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 10:02:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 10:02:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:03,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:03,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:03,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:03,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:03,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:03,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:03,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:02:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:03,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:03,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:02:03,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-25 10:02:03,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:03,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:02:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:04,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:02:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 10:02:04,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:02:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:04,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:02:04,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 10:02:04,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:02:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:02:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 10:02:04,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:02:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:04,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:04,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:02:04,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 10:02:04,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:04,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:02:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:04,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:05,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:05,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:02:05,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:05,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 10:02:05,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:05,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:05,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:05,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:02:05,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:05,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:05,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:05,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:02:05,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 10:02:05,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:05,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:02:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:05,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:05,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:05,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:02:05,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:02:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:05,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:02:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:05,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:05,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:05,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:05,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:05,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:02:05,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:05,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:05,338 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 10:02:05,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816818677] [2020-09-25 10:02:05,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:05,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:02:05,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492873043] [2020-09-25 10:02:05,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:02:05,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:05,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:02:05,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:02:05,341 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 10:02:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:05,574 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 10:02:05,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:02:05,575 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 10:02:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:05,577 INFO L225 Difference]: With dead ends: 69 [2020-09-25 10:02:05,578 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 10:02:05,579 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 10:02:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 10:02:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 10:02:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 10:02:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 10:02:05,586 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 10:02:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:05,586 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 10:02:05,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:02:05,587 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 10:02:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 10:02:05,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:05,588 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 10:02:05,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:02:05,588 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:05,589 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 10:02:05,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:05,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784562950] [2020-09-25 10:02:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:05,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:10,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:10,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 10:02:10,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:02:10,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:10,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:02:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 10:02:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:02:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:10,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:10,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:10,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:02:10,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:10,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:02:10,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:10,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:10,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:02:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:10,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:11,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:11,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:02:11,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-25 10:02:11,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:11,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:02:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:11,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:02:11,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:11,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:11,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:02:11,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-25 10:02:11,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:11,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:02:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:02:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:11,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:11,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 10:02:11,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:11,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 10:02:11,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:11,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:02:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:02:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:11,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:02:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 10:02:12,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:02:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:02:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:02:12,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 10:02:12,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:02:12,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:02:12,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 10:02:12,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:02:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:02:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:02:12,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 10:02:12,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:02:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:02:12,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:12,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:02:12,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:02:12,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:02:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:12,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:02:12,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:02:12,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:02:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:02:12,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:12,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:02:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:12,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:12,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:12,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:02:12,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:12,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:12,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:02:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:12,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:02:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 10:02:12,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784562950] [2020-09-25 10:02:12,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:12,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 10:02:12,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834564507] [2020-09-25 10:02:12,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 10:02:12,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:12,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 10:02:12,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:02:12,950 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 10:02:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:13,212 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 10:02:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 10:02:13,212 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 10:02:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:13,214 INFO L225 Difference]: With dead ends: 74 [2020-09-25 10:02:13,214 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 10:02:13,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 10:02:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 10:02:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 10:02:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 10:02:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 10:02:13,233 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 10:02:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:13,234 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 10:02:13,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 10:02:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 10:02:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 10:02:13,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:13,236 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 10:02:13,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:02:13,241 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:13,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:13,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 10:02:13,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:13,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621416153] [2020-09-25 10:02:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 10:02:13,259 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 10:02:13,260 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 10:02:13,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:02:13,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:02:13 BoogieIcfgContainer [2020-09-25 10:02:13,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:02:13,303 INFO L168 Benchmark]: Toolchain (without parser) took 34007.35 ms. Allocated memory was 139.5 MB in the beginning and 421.0 MB in the end (delta: 281.5 MB). Free memory was 102.5 MB in the beginning and 390.0 MB in the end (delta: -287.5 MB). Peak memory consumption was 285.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:02:13,304 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 10:02:13,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.16 ms. Allocated memory is still 139.5 MB. Free memory was 101.8 MB in the beginning and 92.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:02:13,305 INFO L168 Benchmark]: Boogie Preprocessor took 121.18 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:02:13,306 INFO L168 Benchmark]: RCFGBuilder took 275.19 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 169.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:02:13,307 INFO L168 Benchmark]: TraceAbstraction took 33285.67 ms. Allocated memory was 202.4 MB in the beginning and 421.0 MB in the end (delta: 218.6 MB). Free memory was 168.9 MB in the beginning and 390.0 MB in the end (delta: -221.1 MB). Peak memory consumption was 289.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:02:13,310 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.16 ms. Allocated memory is still 139.5 MB. Free memory was 101.8 MB in the beginning and 92.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.18 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.19 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 169.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33285.67 ms. Allocated memory was 202.4 MB in the beginning and 421.0 MB in the end (delta: 218.6 MB). Free memory was 168.9 MB in the beginning and 390.0 MB in the end (delta: -221.1 MB). Peak memory consumption was 289.0 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: 33.1s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 185 SDslu, 1142 SDs, 0 SdLazy, 445 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 319 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 2.2s 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, 0.0s SatisfiabilityAnalysisTime, 30.9s InterpolantComputationTime, 616 NumberOfCodeBlocks, 616 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 72521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 438/1140 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...