/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/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:17:15,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:17:15,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:17:15,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:17:15,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:17:15,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:17:15,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:17:15,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:17:15,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:17:15,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:17:15,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:17:15,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:17:15,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:17:15,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:17:15,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:17:15,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:17:15,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:17:15,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:17:15,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:17:15,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:17:15,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:17:15,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:17:15,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:17:15,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:17:15,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:17:15,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:17:15,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:17:15,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:17:15,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:17:15,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:17:15,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:17:15,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:17:15,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:17:15,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:17:15,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:17:15,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:17:15,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:17:15,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:17:15,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:17:15,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:17:15,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:17:15,732 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 10:17:15,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:17:15,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:17:15,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:17:15,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:17:15,763 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:17:15,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:17:15,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:17:15,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:17:15,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:17:15,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:17:15,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:17:15,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:17:15,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:17:15,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:17:15,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:17:15,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:17:15,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:17:15,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:17:15,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:17:15,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:17:15,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:17:15,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:17:15,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:17:15,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:17:15,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:17:15,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:17:15,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:17:15,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:17:15,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:17:15,769 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 10:17:16,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:17:16,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:17:16,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:17:16,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:17:16,321 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:17:16,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-25 10:17:16,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/384469139/53f86dce756649fda0e95beb4c6bb8fd/FLAG4265cefd2 [2020-09-25 10:17:16,976 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:17:16,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-25 10:17:16,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/384469139/53f86dce756649fda0e95beb4c6bb8fd/FLAG4265cefd2 [2020-09-25 10:17:17,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/384469139/53f86dce756649fda0e95beb4c6bb8fd [2020-09-25 10:17:17,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:17:17,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:17:17,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:17,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:17:17,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:17:17,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:17,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddb90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17, skipping insertion in model container [2020-09-25 10:17:17,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:17,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:17:17,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:17:17,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:17,756 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:17:17,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:17,962 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:17:17,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17 WrapperNode [2020-09-25 10:17:17,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:17,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:17:17,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:17:17,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:17:17,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:17,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:17,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:17,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:18,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:18,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:18,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (1/1) ... [2020-09-25 10:17:18,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:17:18,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:17:18,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:17:18,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:17:18,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (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 10:17:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:17:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:17:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:17:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:17:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:17:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:17:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:17:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:17:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:17:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:17:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:17:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:17:19,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:17:19,119 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:17:19,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:19 BoogieIcfgContainer [2020-09-25 10:17:19,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:17:19,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:17:19,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:17:19,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:17:19,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:17:17" (1/3) ... [2020-09-25 10:17:19,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753d228a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:19, skipping insertion in model container [2020-09-25 10:17:19,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:17" (2/3) ... [2020-09-25 10:17:19,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753d228a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:19, skipping insertion in model container [2020-09-25 10:17:19,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:19" (3/3) ... [2020-09-25 10:17:19,142 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-09-25 10:17:19,155 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:17:19,168 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-09-25 10:17:19,195 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-09-25 10:17:19,235 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:17:19,235 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:17:19,235 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:17:19,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:17:19,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:17:19,236 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:17:19,236 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:17:19,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:17:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states. [2020-09-25 10:17:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 10:17:19,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:19,303 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] [2020-09-25 10:17:19,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash 519309997, now seen corresponding path program 1 times [2020-09-25 10:17:19,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:19,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230405036] [2020-09-25 10:17:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:19,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:19,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:19,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:17:19,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:19,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-25 10:17:19,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:19,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:19,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:17:19,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:17:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:20,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:20,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:20,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:20,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:20,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:20,115 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 10:17:20,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230405036] [2020-09-25 10:17:20,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:20,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:20,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321329733] [2020-09-25 10:17:20,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:20,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:20,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:20,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:20,151 INFO L87 Difference]: Start difference. First operand 519 states. Second operand 8 states. [2020-09-25 10:17:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:22,182 INFO L93 Difference]: Finished difference Result 546 states and 624 transitions. [2020-09-25 10:17:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:17:22,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-25 10:17:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:22,227 INFO L225 Difference]: With dead ends: 546 [2020-09-25 10:17:22,228 INFO L226 Difference]: Without dead ends: 471 [2020-09-25 10:17:22,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:17:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-25 10:17:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 459. [2020-09-25 10:17:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-09-25 10:17:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 480 transitions. [2020-09-25 10:17:22,354 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 480 transitions. Word has length 25 [2020-09-25 10:17:22,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:22,355 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 480 transitions. [2020-09-25 10:17:22,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 480 transitions. [2020-09-25 10:17:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 10:17:22,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:22,356 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] [2020-09-25 10:17:22,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:17:22,357 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:22,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash 775203426, now seen corresponding path program 1 times [2020-09-25 10:17:22,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:22,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339137935] [2020-09-25 10:17:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 10:17:22,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 10:17:22,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:17:22,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:22,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:22,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:22,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:22,812 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 10:17:22,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339137935] [2020-09-25 10:17:22,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:22,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:22,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982241161] [2020-09-25 10:17:22,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:22,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:22,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:22,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:22,817 INFO L87 Difference]: Start difference. First operand 459 states and 480 transitions. Second operand 8 states. [2020-09-25 10:17:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:24,349 INFO L93 Difference]: Finished difference Result 469 states and 490 transitions. [2020-09-25 10:17:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:17:24,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-09-25 10:17:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:24,354 INFO L225 Difference]: With dead ends: 469 [2020-09-25 10:17:24,355 INFO L226 Difference]: Without dead ends: 447 [2020-09-25 10:17:24,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:17:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-25 10:17:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-09-25 10:17:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-09-25 10:17:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 459 transitions. [2020-09-25 10:17:24,380 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 459 transitions. Word has length 30 [2020-09-25 10:17:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:24,380 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 459 transitions. [2020-09-25 10:17:24,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 459 transitions. [2020-09-25 10:17:24,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:17:24,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:24,383 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] [2020-09-25 10:17:24,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:17:24,384 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1526563962, now seen corresponding path program 1 times [2020-09-25 10:17:24,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:24,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459950900] [2020-09-25 10:17:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:24,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:24,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:17:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:17:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-09-25 10:17:26,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:17:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:26,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:26,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:26,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:26,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:26,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:26,314 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 10:17:26,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459950900] [2020-09-25 10:17:26,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:26,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:17:26,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131581781] [2020-09-25 10:17:26,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:17:26,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:26,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:17:26,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:17:26,317 INFO L87 Difference]: Start difference. First operand 447 states and 459 transitions. Second operand 7 states. [2020-09-25 10:17:27,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:27,348 INFO L93 Difference]: Finished difference Result 447 states and 459 transitions. [2020-09-25 10:17:27,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:17:27,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-25 10:17:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:27,354 INFO L225 Difference]: With dead ends: 447 [2020-09-25 10:17:27,354 INFO L226 Difference]: Without dead ends: 445 [2020-09-25 10:17:27,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:17:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-09-25 10:17:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2020-09-25 10:17:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-25 10:17:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 457 transitions. [2020-09-25 10:17:27,371 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 457 transitions. Word has length 47 [2020-09-25 10:17:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:27,373 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 457 transitions. [2020-09-25 10:17:27,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:17:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 457 transitions. [2020-09-25 10:17:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 10:17:27,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:27,376 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] [2020-09-25 10:17:27,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:17:27,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:27,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash -344421966, now seen corresponding path program 1 times [2020-09-25 10:17:27,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:27,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371742110] [2020-09-25 10:17:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 10:17:28,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:17:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-09-25 10:17:28,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:17:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:17:28,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:28,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:28,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:28,440 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 10:17:28,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371742110] [2020-09-25 10:17:28,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:28,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:17:28,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117926397] [2020-09-25 10:17:28,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:17:28,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:28,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:17:28,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:28,443 INFO L87 Difference]: Start difference. First operand 445 states and 457 transitions. Second operand 10 states. [2020-09-25 10:17:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:30,243 INFO L93 Difference]: Finished difference Result 512 states and 528 transitions. [2020-09-25 10:17:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:17:30,244 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-25 10:17:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:30,248 INFO L225 Difference]: With dead ends: 512 [2020-09-25 10:17:30,248 INFO L226 Difference]: Without dead ends: 500 [2020-09-25 10:17:30,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:17:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-09-25 10:17:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 433. [2020-09-25 10:17:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-25 10:17:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 445 transitions. [2020-09-25 10:17:30,263 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 445 transitions. Word has length 52 [2020-09-25 10:17:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:30,266 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 445 transitions. [2020-09-25 10:17:30,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:17:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 445 transitions. [2020-09-25 10:17:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 10:17:30,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:30,278 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] [2020-09-25 10:17:30,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:17:30,278 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash 784264785, now seen corresponding path program 1 times [2020-09-25 10:17:30,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:30,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952324041] [2020-09-25 10:17:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:17:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-09-25 10:17:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:17:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:30,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:30,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:30,762 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 10:17:30,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952324041] [2020-09-25 10:17:30,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:30,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:17:30,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642317233] [2020-09-25 10:17:30,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:17:30,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:30,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:17:30,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:17:30,766 INFO L87 Difference]: Start difference. First operand 433 states and 445 transitions. Second operand 7 states. [2020-09-25 10:17:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:32,079 INFO L93 Difference]: Finished difference Result 499 states and 513 transitions. [2020-09-25 10:17:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:32,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-09-25 10:17:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:32,084 INFO L225 Difference]: With dead ends: 499 [2020-09-25 10:17:32,084 INFO L226 Difference]: Without dead ends: 497 [2020-09-25 10:17:32,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:17:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-09-25 10:17:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 431. [2020-09-25 10:17:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-09-25 10:17:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 443 transitions. [2020-09-25 10:17:32,097 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 443 transitions. Word has length 57 [2020-09-25 10:17:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:32,097 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 443 transitions. [2020-09-25 10:17:32,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:17:32,097 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 443 transitions. [2020-09-25 10:17:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 10:17:32,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:32,099 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] [2020-09-25 10:17:32,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:17:32,099 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:32,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2053600793, now seen corresponding path program 1 times [2020-09-25 10:17:32,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:32,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53566994] [2020-09-25 10:17:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:32,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:32,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:32,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:17:32,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:32,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 10:17:32,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:32,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:17:32,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:32,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:32,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:32,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:32,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:32,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:32,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:32,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:32,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:32,557 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 10:17:32,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53566994] [2020-09-25 10:17:32,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:32,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:17:32,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734484012] [2020-09-25 10:17:32,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:17:32,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:32,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:17:32,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:17:32,565 INFO L87 Difference]: Start difference. First operand 431 states and 443 transitions. Second operand 7 states. [2020-09-25 10:17:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:33,737 INFO L93 Difference]: Finished difference Result 431 states and 443 transitions. [2020-09-25 10:17:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:17:33,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-09-25 10:17:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:33,741 INFO L225 Difference]: With dead ends: 431 [2020-09-25 10:17:33,741 INFO L226 Difference]: Without dead ends: 429 [2020-09-25 10:17:33,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:17:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-09-25 10:17:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-09-25 10:17:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-09-25 10:17:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 441 transitions. [2020-09-25 10:17:33,753 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 441 transitions. Word has length 57 [2020-09-25 10:17:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:33,753 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 441 transitions. [2020-09-25 10:17:33,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:17:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 441 transitions. [2020-09-25 10:17:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 10:17:33,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:33,755 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] [2020-09-25 10:17:33,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:17:33,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:33,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:33,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1921870681, now seen corresponding path program 1 times [2020-09-25 10:17:33,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:33,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827439569] [2020-09-25 10:17:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:17:34,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:34,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-09-25 10:17:34,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:34,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:17:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:34,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:34,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:34,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:34,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:34,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:34,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:34,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:34,211 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 10:17:34,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827439569] [2020-09-25 10:17:34,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:34,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:17:34,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330741128] [2020-09-25 10:17:34,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:17:34,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:17:34,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:17:34,214 INFO L87 Difference]: Start difference. First operand 429 states and 441 transitions. Second operand 7 states. [2020-09-25 10:17:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:35,360 INFO L93 Difference]: Finished difference Result 478 states and 492 transitions. [2020-09-25 10:17:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:35,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-09-25 10:17:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:35,365 INFO L225 Difference]: With dead ends: 478 [2020-09-25 10:17:35,365 INFO L226 Difference]: Without dead ends: 476 [2020-09-25 10:17:35,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:17:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-09-25 10:17:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 427. [2020-09-25 10:17:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-25 10:17:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 439 transitions. [2020-09-25 10:17:35,377 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 439 transitions. Word has length 57 [2020-09-25 10:17:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:35,377 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 439 transitions. [2020-09-25 10:17:35,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:17:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 439 transitions. [2020-09-25 10:17:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:17:35,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:35,378 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] [2020-09-25 10:17:35,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:17:35,379 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:35,379 INFO L82 PathProgramCache]: Analyzing trace with hash -382650347, now seen corresponding path program 1 times [2020-09-25 10:17:35,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:35,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114496387] [2020-09-25 10:17:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:17:36,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:36,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 996 [2020-09-25 10:17:36,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:36,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:17:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:36,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:36,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:36,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:17:36,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:36,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:36,552 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 10:17:36,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114496387] [2020-09-25 10:17:36,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:36,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:36,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860998882] [2020-09-25 10:17:36,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:36,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:36,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:36,555 INFO L87 Difference]: Start difference. First operand 427 states and 439 transitions. Second operand 8 states. [2020-09-25 10:17:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:38,130 INFO L93 Difference]: Finished difference Result 494 states and 508 transitions. [2020-09-25 10:17:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:17:38,131 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 10:17:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:38,134 INFO L225 Difference]: With dead ends: 494 [2020-09-25 10:17:38,135 INFO L226 Difference]: Without dead ends: 492 [2020-09-25 10:17:38,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:17:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-09-25 10:17:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 425. [2020-09-25 10:17:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-09-25 10:17:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 437 transitions. [2020-09-25 10:17:38,146 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 437 transitions. Word has length 62 [2020-09-25 10:17:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:38,146 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 437 transitions. [2020-09-25 10:17:38,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 437 transitions. [2020-09-25 10:17:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:17:38,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:38,148 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] [2020-09-25 10:17:38,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:17:38,148 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:38,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1546196018, now seen corresponding path program 1 times [2020-09-25 10:17:38,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:38,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048497525] [2020-09-25 10:17:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:39,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:39,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:17:39,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-25 10:17:39,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:39,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:39,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:39,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:39,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:17:39,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:39,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:39,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:39,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:39,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:39,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:39,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:39,324 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 10:17:39,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048497525] [2020-09-25 10:17:39,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:39,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:39,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395941521] [2020-09-25 10:17:39,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:39,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:39,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:39,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:39,332 INFO L87 Difference]: Start difference. First operand 425 states and 437 transitions. Second operand 8 states. [2020-09-25 10:17:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:40,726 INFO L93 Difference]: Finished difference Result 425 states and 437 transitions. [2020-09-25 10:17:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:17:40,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 10:17:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:40,730 INFO L225 Difference]: With dead ends: 425 [2020-09-25 10:17:40,730 INFO L226 Difference]: Without dead ends: 413 [2020-09-25 10:17:40,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:17:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-25 10:17:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2020-09-25 10:17:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-09-25 10:17:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 425 transitions. [2020-09-25 10:17:40,746 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 425 transitions. Word has length 62 [2020-09-25 10:17:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:40,747 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 425 transitions. [2020-09-25 10:17:40,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 425 transitions. [2020-09-25 10:17:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:17:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:40,748 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] [2020-09-25 10:17:40,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:17:40,749 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash 781872345, now seen corresponding path program 1 times [2020-09-25 10:17:40,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:40,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793477371] [2020-09-25 10:17:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:40,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:40,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:17:41,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-09-25 10:17:41,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:17:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:17:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:41,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:41,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:41,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:41,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:41,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:41,916 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 10:17:41,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793477371] [2020-09-25 10:17:41,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:41,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:41,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815547186] [2020-09-25 10:17:41,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:41,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:41,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:41,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:41,918 INFO L87 Difference]: Start difference. First operand 413 states and 425 transitions. Second operand 8 states. [2020-09-25 10:17:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:43,397 INFO L93 Difference]: Finished difference Result 453 states and 467 transitions. [2020-09-25 10:17:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:17:43,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 10:17:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:43,401 INFO L225 Difference]: With dead ends: 453 [2020-09-25 10:17:43,401 INFO L226 Difference]: Without dead ends: 451 [2020-09-25 10:17:43,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:17:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-25 10:17:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 411. [2020-09-25 10:17:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-09-25 10:17:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 423 transitions. [2020-09-25 10:17:43,412 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 423 transitions. Word has length 62 [2020-09-25 10:17:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:43,412 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 423 transitions. [2020-09-25 10:17:43,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 423 transitions. [2020-09-25 10:17:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 10:17:43,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:43,413 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] [2020-09-25 10:17:43,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:17:43,414 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:43,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:43,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1199808863, now seen corresponding path program 1 times [2020-09-25 10:17:43,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:43,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765685088] [2020-09-25 10:17:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:43,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:44,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:48,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:17:48,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:17:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:17:48,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:48,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:17:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 10:17:48,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:48,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:48,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:48,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:17:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:48,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:48,523 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 10:17:48,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765685088] [2020-09-25 10:17:48,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:48,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:48,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437208831] [2020-09-25 10:17:48,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:48,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:48,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:48,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:48,526 INFO L87 Difference]: Start difference. First operand 411 states and 423 transitions. Second operand 8 states. [2020-09-25 10:17:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:49,831 INFO L93 Difference]: Finished difference Result 411 states and 423 transitions. [2020-09-25 10:17:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:49,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 10:17:49,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:49,835 INFO L225 Difference]: With dead ends: 411 [2020-09-25 10:17:49,835 INFO L226 Difference]: Without dead ends: 409 [2020-09-25 10:17:49,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:17:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-09-25 10:17:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2020-09-25 10:17:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-09-25 10:17:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 421 transitions. [2020-09-25 10:17:49,847 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 421 transitions. Word has length 70 [2020-09-25 10:17:49,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:49,847 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 421 transitions. [2020-09-25 10:17:49,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 421 transitions. [2020-09-25 10:17:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 10:17:49,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:49,849 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] [2020-09-25 10:17:49,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:17:49,849 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:49,850 INFO L82 PathProgramCache]: Analyzing trace with hash 886846446, now seen corresponding path program 1 times [2020-09-25 10:17:49,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:49,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167617909] [2020-09-25 10:17:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:52,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:52,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 10:17:52,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:17:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3081 [2020-09-25 10:17:52,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:52,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:17:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:17:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 10:17:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:53,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:53,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:53,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:53,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:17:53,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:53,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:53,076 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 10:17:53,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167617909] [2020-09-25 10:17:53,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:53,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:17:53,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325833699] [2020-09-25 10:17:53,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:17:53,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:53,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:17:53,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:17:53,078 INFO L87 Difference]: Start difference. First operand 409 states and 421 transitions. Second operand 8 states. [2020-09-25 10:17:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:54,471 INFO L93 Difference]: Finished difference Result 409 states and 421 transitions. [2020-09-25 10:17:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:17:54,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-09-25 10:17:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:54,473 INFO L225 Difference]: With dead ends: 409 [2020-09-25 10:17:54,473 INFO L226 Difference]: Without dead ends: 222 [2020-09-25 10:17:54,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:17:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-25 10:17:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-09-25 10:17:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-25 10:17:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2020-09-25 10:17:54,481 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 75 [2020-09-25 10:17:54,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:54,481 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2020-09-25 10:17:54,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:17:54,481 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2020-09-25 10:17:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 10:17:54,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:54,483 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] [2020-09-25 10:17:54,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 10:17:54,484 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash -778836105, now seen corresponding path program 1 times [2020-09-25 10:17:54,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:54,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765530073] [2020-09-25 10:17:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:54,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:55,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:55,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:59,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:59,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 10:17:59,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:17:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:17:59,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:59,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:17:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:17:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-09-25 10:17:59,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:17:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:59,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:59,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:17:59,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:59,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:59,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:59,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:59,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:59,840 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 10:17:59,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765530073] [2020-09-25 10:17:59,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:59,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 10:17:59,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865216318] [2020-09-25 10:17:59,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:17:59,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:59,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:17:59,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:17:59,844 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 15 states. [2020-09-25 10:18:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:00,799 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2020-09-25 10:18:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:18:00,799 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 196 [2020-09-25 10:18:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:00,802 INFO L225 Difference]: With dead ends: 247 [2020-09-25 10:18:00,802 INFO L226 Difference]: Without dead ends: 245 [2020-09-25 10:18:00,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2020-09-25 10:18:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-09-25 10:18:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 220. [2020-09-25 10:18:00,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-25 10:18:00,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2020-09-25 10:18:00,810 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 196 [2020-09-25 10:18:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:00,810 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2020-09-25 10:18:00,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:18:00,811 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2020-09-25 10:18:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 10:18:00,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:00,813 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] [2020-09-25 10:18:00,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 10:18:00,813 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:00,814 INFO L82 PathProgramCache]: Analyzing trace with hash -687472165, now seen corresponding path program 1 times [2020-09-25 10:18:00,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:00,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383833577] [2020-09-25 10:18:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:05,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 10:18:05,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:18:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:18:05,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:05,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:18:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:18:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-09-25 10:18:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:06,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:06,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:06,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:18:06,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:06,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:06,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:06,081 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 10:18:06,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383833577] [2020-09-25 10:18:06,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:06,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 10:18:06,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974180973] [2020-09-25 10:18:06,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:18:06,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:06,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:18:06,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:18:06,083 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 15 states. [2020-09-25 10:18:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:06,978 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2020-09-25 10:18:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:18:06,979 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 196 [2020-09-25 10:18:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:06,982 INFO L225 Difference]: With dead ends: 220 [2020-09-25 10:18:06,982 INFO L226 Difference]: Without dead ends: 218 [2020-09-25 10:18:06,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:18:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-25 10:18:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-25 10:18:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-25 10:18:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2020-09-25 10:18:06,987 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 196 [2020-09-25 10:18:06,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:06,988 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2020-09-25 10:18:06,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:18:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2020-09-25 10:18:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 10:18:06,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:06,990 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] [2020-09-25 10:18:06,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 10:18:06,991 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:06,991 INFO L82 PathProgramCache]: Analyzing trace with hash 858487023, now seen corresponding path program 1 times [2020-09-25 10:18:06,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:06,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865373712] [2020-09-25 10:18:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking...