/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:35:13,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:35:13,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:35:13,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:35:13,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:35:13,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:35:13,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:35:13,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:35:13,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:35:13,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:35:13,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:35:13,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:35:13,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:35:13,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:35:13,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:35:13,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:35:13,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:35:13,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:35:13,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:35:13,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:35:13,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:35:13,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:35:13,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:35:13,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:35:13,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:35:13,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:35:13,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:35:13,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:35:13,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:35:13,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:35:13,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:35:13,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:35:13,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:35:13,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:35:13,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:35:13,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:35:13,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:35:13,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:35:13,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:35:13,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:35:13,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:35:13,676 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 [2020-09-24 19:35:13,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:35:13,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:35:13,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:35:13,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:35:13,706 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:35:13,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:35:13,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:35:13,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:35:13,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:35:13,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:35:13,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:35:13,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:35:13,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:35:13,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:35:13,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:35:13,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:35:13,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:35:13,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:35:13,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:35:13,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:35:13,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:35:13,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:35:13,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:35:13,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:35:13,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:35:13,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:35:13,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:35:13,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:35:13,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:35:13,712 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:35:14,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:35:14,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:35:14,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:35:14,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:35:14,269 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:35:14,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-09-24 19:35:14,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b912e44a7/d722237941004a59af38f9d2d209e4ba/FLAG87e06f4a9 [2020-09-24 19:35:14,973 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:35:14,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-09-24 19:35:14,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b912e44a7/d722237941004a59af38f9d2d209e4ba/FLAG87e06f4a9 [2020-09-24 19:35:15,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b912e44a7/d722237941004a59af38f9d2d209e4ba [2020-09-24 19:35:15,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:35:15,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:35:15,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:15,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:35:15,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:35:15,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:15,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9447a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15, skipping insertion in model container [2020-09-24 19:35:15,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:15,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:35:15,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:35:15,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:15,840 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:35:15,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:15,975 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:35:15,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15 WrapperNode [2020-09-24 19:35:15,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:15,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:35:15,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:35:15,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:35:15,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:15,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:16,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:16,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:16,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:16,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:16,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (1/1) ... [2020-09-24 19:35:16,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:35:16,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:35:16,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:35:16,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:35:16,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (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 [2020-09-24 19:35:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:35:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:35:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:35:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:35:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-24 19:35:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 19:35:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:35:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:35:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:35:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:35:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:35:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 19:35:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:35:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:35:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:35:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:35:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:35:17,773 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:35:17,773 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:35:17,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:17 BoogieIcfgContainer [2020-09-24 19:35:17,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:35:17,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:35:17,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:35:17,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:35:17,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:35:15" (1/3) ... [2020-09-24 19:35:17,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95ebcfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:17, skipping insertion in model container [2020-09-24 19:35:17,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:15" (2/3) ... [2020-09-24 19:35:17,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95ebcfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:17, skipping insertion in model container [2020-09-24 19:35:17,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:17" (3/3) ... [2020-09-24 19:35:17,812 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2020-09-24 19:35:17,826 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:35:17,840 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:35:17,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:35:17,896 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:35:17,896 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:35:17,896 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:35:17,896 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:35:17,896 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:35:17,897 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:35:17,897 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:35:17,897 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:35:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states. [2020-09-24 19:35:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-09-24 19:35:17,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:17,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:17,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:17,984 INFO L82 PathProgramCache]: Analyzing trace with hash -378957588, now seen corresponding path program 1 times [2020-09-24 19:35:17,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:17,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182414781] [2020-09-24 19:35:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:19,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:19,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-09-24 19:35:19,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-09-24 19:35:19,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:35:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:35:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-24 19:35:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:35:20,653 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 19:35:20,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:20,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:20,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:35:20,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:20,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:35:20,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:20,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:35:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:21,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182414781] [2020-09-24 19:35:21,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:21,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 19:35:21,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15938707] [2020-09-24 19:35:21,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 19:35:21,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:21,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 19:35:21,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 19:35:21,364 INFO L87 Difference]: Start difference. First operand 726 states. Second operand 14 states. [2020-09-24 19:35:21,650 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 19:35:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:24,346 INFO L93 Difference]: Finished difference Result 806 states and 850 transitions. [2020-09-24 19:35:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:35:24,348 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 488 [2020-09-24 19:35:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:24,397 INFO L225 Difference]: With dead ends: 806 [2020-09-24 19:35:24,397 INFO L226 Difference]: Without dead ends: 532 [2020-09-24 19:35:24,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-09-24 19:35:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-09-24 19:35:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 512. [2020-09-24 19:35:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-09-24 19:35:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 512 transitions. [2020-09-24 19:35:24,506 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 512 transitions. Word has length 488 [2020-09-24 19:35:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:24,508 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 512 transitions. [2020-09-24 19:35:24,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 19:35:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 512 transitions. [2020-09-24 19:35:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-09-24 19:35:24,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:24,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:24,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:35:24,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:24,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1127244588, now seen corresponding path program 1 times [2020-09-24 19:35:24,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:24,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491241527] [2020-09-24 19:35:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:25,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-09-24 19:35:25,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-24 19:35:25,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 19:35:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:35:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-24 19:35:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:26,410 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 19:35:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:26,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:26,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:35:26,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:35:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:26,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:27,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491241527] [2020-09-24 19:35:27,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:27,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:35:27,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903546921] [2020-09-24 19:35:27,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:35:27,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:27,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:35:27,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:35:27,252 INFO L87 Difference]: Start difference. First operand 512 states and 512 transitions. Second operand 15 states. [2020-09-24 19:35:27,481 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 19:35:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:29,679 INFO L93 Difference]: Finished difference Result 563 states and 563 transitions. [2020-09-24 19:35:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 19:35:29,680 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 511 [2020-09-24 19:35:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:29,685 INFO L225 Difference]: With dead ends: 563 [2020-09-24 19:35:29,685 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 19:35:29,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-09-24 19:35:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 19:35:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 535. [2020-09-24 19:35:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-09-24 19:35:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 535 transitions. [2020-09-24 19:35:29,711 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 535 transitions. Word has length 511 [2020-09-24 19:35:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:29,712 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 535 transitions. [2020-09-24 19:35:29,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:35:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 535 transitions. [2020-09-24 19:35:29,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-09-24 19:35:29,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:29,718 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:29,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:35:29,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:29,719 INFO L82 PathProgramCache]: Analyzing trace with hash -382293012, now seen corresponding path program 2 times [2020-09-24 19:35:29,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:29,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710271522] [2020-09-24 19:35:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:29,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:30,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:30,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-09-24 19:35:30,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:30,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-24 19:35:30,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 19:35:30,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:35:30,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-09-24 19:35:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:31,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:31,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:31,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:35:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:35:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:32,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710271522] [2020-09-24 19:35:32,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:32,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 19:35:32,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71609608] [2020-09-24 19:35:32,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 19:35:32,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:32,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 19:35:32,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:35:32,032 INFO L87 Difference]: Start difference. First operand 535 states and 535 transitions. Second operand 16 states. [2020-09-24 19:35:32,265 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 19:35:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:34,717 INFO L93 Difference]: Finished difference Result 586 states and 586 transitions. [2020-09-24 19:35:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:35:34,718 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 534 [2020-09-24 19:35:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:34,722 INFO L225 Difference]: With dead ends: 586 [2020-09-24 19:35:34,723 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 19:35:34,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-09-24 19:35:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 19:35:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 558. [2020-09-24 19:35:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-09-24 19:35:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 558 transitions. [2020-09-24 19:35:34,740 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 558 transitions. Word has length 534 [2020-09-24 19:35:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:34,742 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 558 transitions. [2020-09-24 19:35:34,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 19:35:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 558 transitions. [2020-09-24 19:35:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-09-24 19:35:34,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:34,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:34,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:35:34,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1886659028, now seen corresponding path program 3 times [2020-09-24 19:35:34,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:34,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112630508] [2020-09-24 19:35:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:35,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:35,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-09-24 19:35:35,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-09-24 19:35:35,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:35:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:35:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-09-24 19:35:35,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:36,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:36,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:35:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:35:36,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:35:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:37,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112630508] [2020-09-24 19:35:37,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:37,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 19:35:37,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545221732] [2020-09-24 19:35:37,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 19:35:37,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:37,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 19:35:37,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:35:37,121 INFO L87 Difference]: Start difference. First operand 558 states and 558 transitions. Second operand 17 states. [2020-09-24 19:35:37,359 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 19:35:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:40,066 INFO L93 Difference]: Finished difference Result 609 states and 609 transitions. [2020-09-24 19:35:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:35:40,069 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 557 [2020-09-24 19:35:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:40,074 INFO L225 Difference]: With dead ends: 609 [2020-09-24 19:35:40,074 INFO L226 Difference]: Without dead ends: 601 [2020-09-24 19:35:40,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-09-24 19:35:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-09-24 19:35:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 581. [2020-09-24 19:35:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-09-24 19:35:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 581 transitions. [2020-09-24 19:35:40,092 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 581 transitions. Word has length 557 [2020-09-24 19:35:40,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:40,093 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 581 transitions. [2020-09-24 19:35:40,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 19:35:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 581 transitions. [2020-09-24 19:35:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-09-24 19:35:40,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:40,098 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:40,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:35:40,098 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:40,099 INFO L82 PathProgramCache]: Analyzing trace with hash 743212780, now seen corresponding path program 4 times [2020-09-24 19:35:40,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:40,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700505682] [2020-09-24 19:35:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:41,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 587 [2020-09-24 19:35:41,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:41,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:35:41,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 19:35:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:35:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-09-24 19:35:41,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:41,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:41,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:35:41,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:35:41,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:41,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:42,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700505682] [2020-09-24 19:35:42,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:42,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 19:35:42,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726964272] [2020-09-24 19:35:42,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 19:35:42,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:42,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 19:35:42,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:35:42,474 INFO L87 Difference]: Start difference. First operand 581 states and 581 transitions. Second operand 18 states. [2020-09-24 19:35:42,688 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 19:35:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:45,628 INFO L93 Difference]: Finished difference Result 632 states and 632 transitions. [2020-09-24 19:35:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:35:45,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 580 [2020-09-24 19:35:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:45,639 INFO L225 Difference]: With dead ends: 632 [2020-09-24 19:35:45,639 INFO L226 Difference]: Without dead ends: 624 [2020-09-24 19:35:45,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 19:35:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-09-24 19:35:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 604. [2020-09-24 19:35:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-09-24 19:35:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 604 transitions. [2020-09-24 19:35:45,665 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 604 transitions. Word has length 580 [2020-09-24 19:35:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:45,666 INFO L479 AbstractCegarLoop]: Abstraction has 604 states and 604 transitions. [2020-09-24 19:35:45,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 19:35:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 604 transitions. [2020-09-24 19:35:45,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-09-24 19:35:45,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:45,672 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:45,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:35:45,672 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:45,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:45,673 INFO L82 PathProgramCache]: Analyzing trace with hash -621287724, now seen corresponding path program 5 times [2020-09-24 19:35:45,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:45,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845742627] [2020-09-24 19:35:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:46,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:46,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 610 [2020-09-24 19:35:46,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 19:35:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:35:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:35:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-09-24 19:35:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:47,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:35:47,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:35:47,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:47,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845742627] [2020-09-24 19:35:47,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:47,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 19:35:47,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108904217] [2020-09-24 19:35:47,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 19:35:47,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:47,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 19:35:47,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:35:47,835 INFO L87 Difference]: Start difference. First operand 604 states and 604 transitions. Second operand 19 states. [2020-09-24 19:35:48,071 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 19:35:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:51,327 INFO L93 Difference]: Finished difference Result 655 states and 655 transitions. [2020-09-24 19:35:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 19:35:51,328 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 603 [2020-09-24 19:35:51,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:51,333 INFO L225 Difference]: With dead ends: 655 [2020-09-24 19:35:51,333 INFO L226 Difference]: Without dead ends: 647 [2020-09-24 19:35:51,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 19:35:51,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-09-24 19:35:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 627. [2020-09-24 19:35:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-09-24 19:35:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 627 transitions. [2020-09-24 19:35:51,350 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 627 transitions. Word has length 603 [2020-09-24 19:35:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:51,351 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 627 transitions. [2020-09-24 19:35:51,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 19:35:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 627 transitions. [2020-09-24 19:35:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2020-09-24 19:35:51,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:51,357 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:51,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:35:51,358 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash -782556692, now seen corresponding path program 6 times [2020-09-24 19:35:51,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:51,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087846480] [2020-09-24 19:35:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:52,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:52,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-09-24 19:35:52,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-09-24 19:35:52,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 19:35:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:35:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-09-24 19:35:52,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:53,350 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 19:35:53,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:53,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:53,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:35:53,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:53,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 19:35:53,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:54,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087846480] [2020-09-24 19:35:54,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:54,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 19:35:54,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673310120] [2020-09-24 19:35:54,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 19:35:54,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:54,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 19:35:54,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-24 19:35:54,040 INFO L87 Difference]: Start difference. First operand 627 states and 627 transitions. Second operand 20 states. [2020-09-24 19:35:54,274 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 19:35:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:57,752 INFO L93 Difference]: Finished difference Result 678 states and 678 transitions. [2020-09-24 19:35:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:35:57,754 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 626 [2020-09-24 19:35:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:57,760 INFO L225 Difference]: With dead ends: 678 [2020-09-24 19:35:57,760 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 19:35:57,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 19:35:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 19:35:57,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 650. [2020-09-24 19:35:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-09-24 19:35:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 650 transitions. [2020-09-24 19:35:57,776 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 650 transitions. Word has length 626 [2020-09-24 19:35:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:57,777 INFO L479 AbstractCegarLoop]: Abstraction has 650 states and 650 transitions. [2020-09-24 19:35:57,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 19:35:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 650 transitions. [2020-09-24 19:35:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-09-24 19:35:57,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:57,783 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:57,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:35:57,784 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:57,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1470819284, now seen corresponding path program 7 times [2020-09-24 19:35:57,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:57,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975117989] [2020-09-24 19:35:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:58,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:58,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:58,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 656 [2020-09-24 19:35:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 19:35:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 19:35:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:35:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 326 [2020-09-24 19:35:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:59,824 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 19:35:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:59,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:35:59,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:59,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:35:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 0 proven. 539 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:36:00,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975117989] [2020-09-24 19:36:00,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:36:00,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 19:36:00,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088976062] [2020-09-24 19:36:00,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 19:36:00,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:36:00,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 19:36:00,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 19:36:00,397 INFO L87 Difference]: Start difference. First operand 650 states and 650 transitions. Second operand 21 states. [2020-09-24 19:36:00,631 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 19:36:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:36:04,650 INFO L93 Difference]: Finished difference Result 701 states and 701 transitions. [2020-09-24 19:36:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:36:04,653 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 649 [2020-09-24 19:36:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:36:04,657 INFO L225 Difference]: With dead ends: 701 [2020-09-24 19:36:04,657 INFO L226 Difference]: Without dead ends: 693 [2020-09-24 19:36:04,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 19:36:04,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-09-24 19:36:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 673. [2020-09-24 19:36:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-09-24 19:36:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 673 transitions. [2020-09-24 19:36:04,686 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 673 transitions. Word has length 649 [2020-09-24 19:36:04,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:36:04,687 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 673 transitions. [2020-09-24 19:36:04,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 19:36:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 673 transitions. [2020-09-24 19:36:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-09-24 19:36:04,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:36:04,693 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:36:04,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:36:04,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:36:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:36:04,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1022198548, now seen corresponding path program 8 times [2020-09-24 19:36:04,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:36:04,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145863929] [2020-09-24 19:36:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:36:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:05,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:05,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-09-24 19:36:05,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:36:05,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:36:05,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:05,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 19:36:05,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 19:36:05,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 349 [2020-09-24 19:36:05,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:36:06,732 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 19:36:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:36:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:36:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:36:06,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:36:06,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:36:06,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:36:06,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:36:06,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:36:06,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:36:06,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:36:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:36:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0