/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:45:24,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:45:24,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:45:24,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:45:24,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:45:24,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:45:24,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:45:24,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:45:24,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:45:24,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:45:24,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:45:24,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:45:24,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:45:24,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:45:24,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:45:24,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:45:24,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:45:24,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:45:24,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:45:24,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:45:24,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:45:24,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:45:24,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:45:24,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:45:24,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:45:24,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:45:24,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:45:24,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:45:24,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:45:24,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:45:24,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:45:24,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:45:24,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:45:24,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:45:24,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:45:24,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:45:24,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:45:24,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:45:24,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:45:24,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:45:24,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:45:24,570 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 06:45:24,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:45:24,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:45:24,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:45:24,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:45:24,617 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:45:24,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:45:24,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:45:24,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:45:24,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:45:24,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:45:24,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:45:24,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:45:24,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:45:24,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:45:24,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:45:24,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:45:24,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:45:24,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:45:24,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:45:24,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:45:24,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:45:24,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:24,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:45:24,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:45:24,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:45:24,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:45:24,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:45:24,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:45:24,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:45:24,623 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:45:25,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:45:25,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:45:25,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:45:25,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:45:25,118 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:45:25,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 06:45:25,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc88ca85d/b920600de586461eb7e681aae628499b/FLAG3309b0d85 [2020-09-25 06:45:25,830 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:45:25,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 06:45:25,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc88ca85d/b920600de586461eb7e681aae628499b/FLAG3309b0d85 [2020-09-25 06:45:26,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc88ca85d/b920600de586461eb7e681aae628499b [2020-09-25 06:45:26,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:45:26,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:45:26,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:26,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:45:26,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:45:26,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:26,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26, skipping insertion in model container [2020-09-25 06:45:26,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:26,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:45:26,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:45:26,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:26,639 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:45:26,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:26,922 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:45:26,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26 WrapperNode [2020-09-25 06:45:26,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:26,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:45:26,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:45:26,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:45:26,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:26,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:26,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:26,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:27,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:27,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:27,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (1/1) ... [2020-09-25 06:45:27,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:45:27,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:45:27,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:45:27,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:45:27,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (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 06:45:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:45:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:45:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:45:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:45:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:45:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:45:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:45:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:45:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:45:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:45:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:45:28,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:45:28,608 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:45:28,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:28 BoogieIcfgContainer [2020-09-25 06:45:28,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:45:28,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:45:28,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:45:28,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:45:28,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:45:26" (1/3) ... [2020-09-25 06:45:28,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73de41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:28, skipping insertion in model container [2020-09-25 06:45:28,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:26" (2/3) ... [2020-09-25 06:45:28,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73de41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:28, skipping insertion in model container [2020-09-25 06:45:28,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:28" (3/3) ... [2020-09-25 06:45:28,629 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 06:45:28,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:45:28,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:45:28,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:45:28,714 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:45:28,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:45:28,715 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:45:28,715 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:45:28,715 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:45:28,715 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:45:28,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:45:28,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:45:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:45:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 06:45:28,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:28,777 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] [2020-09-25 06:45:28,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:28,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:28,787 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 06:45:28,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:28,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34633945] [2020-09-25 06:45:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:31,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:34,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 06:45:34,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 06:45:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:34,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:45:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 06:45:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:45:34,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:34,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:45:34,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:34,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:45:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:34,445 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 06:45:34,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34633945] [2020-09-25 06:45:34,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:34,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:45:34,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130370174] [2020-09-25 06:45:34,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:45:34,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:34,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:45:34,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:45:34,483 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:45:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:36,583 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 06:45:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:45:36,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 06:45:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:36,613 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 06:45:36,613 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 06:45:36,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:36,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 06:45:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 06:45:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 06:45:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 06:45:36,738 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 06:45:36,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:36,740 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 06:45:36,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:45:36,740 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 06:45:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 06:45:36,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:36,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:36,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:36,750 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 06:45:36,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:36,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047965247] [2020-09-25 06:45:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:41,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:41,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 06:45:41,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:45:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:45:41,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:41,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:41,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:45:41,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:45:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 06:45:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:42,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:42,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:42,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:45:42,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:42,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:45:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:42,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:45:42,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:45:42,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 06:45:42,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:42,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:45:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:45:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:42,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047965247] [2020-09-25 06:45:42,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:42,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:45:42,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109530414] [2020-09-25 06:45:42,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:45:42,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:42,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:45:42,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:45:42,535 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 12 states. [2020-09-25 06:45:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:46,398 INFO L93 Difference]: Finished difference Result 1927 states and 2548 transitions. [2020-09-25 06:45:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:45:46,399 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 192 [2020-09-25 06:45:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:46,411 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 06:45:46,411 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 06:45:46,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:45:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 06:45:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 722. [2020-09-25 06:45:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-09-25 06:45:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 845 transitions. [2020-09-25 06:45:46,469 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 845 transitions. Word has length 192 [2020-09-25 06:45:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:46,469 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 845 transitions. [2020-09-25 06:45:46,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:45:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 845 transitions. [2020-09-25 06:45:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 06:45:46,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:46,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:46,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:46,475 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:46,476 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 06:45:46,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:46,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934437960] [2020-09-25 06:45:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:51,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 06:45:51,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:45:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:45:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:51,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:45:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:45:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:51,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:51,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:51,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:45:51,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:51,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:45:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:51,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:45:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:45:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:51,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:45:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:51,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934437960] [2020-09-25 06:45:51,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:51,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:45:51,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517382611] [2020-09-25 06:45:51,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:51,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:51,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:51,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:51,810 INFO L87 Difference]: Start difference. First operand 722 states and 845 transitions. Second operand 7 states. [2020-09-25 06:45:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:54,305 INFO L93 Difference]: Finished difference Result 2072 states and 2491 transitions. [2020-09-25 06:45:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:45:54,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 06:45:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:54,314 INFO L225 Difference]: With dead ends: 2072 [2020-09-25 06:45:54,315 INFO L226 Difference]: Without dead ends: 1372 [2020-09-25 06:45:54,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:45:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2020-09-25 06:45:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1142. [2020-09-25 06:45:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-09-25 06:45:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1369 transitions. [2020-09-25 06:45:54,363 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1369 transitions. Word has length 193 [2020-09-25 06:45:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:54,364 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1369 transitions. [2020-09-25 06:45:54,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1369 transitions. [2020-09-25 06:45:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 06:45:54,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:54,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:54,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:54,370 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:54,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:54,371 INFO L82 PathProgramCache]: Analyzing trace with hash 257301984, now seen corresponding path program 1 times [2020-09-25 06:45:54,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:54,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370512140] [2020-09-25 06:45:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:59,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:59,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 06:45:59,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:59,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:45:59,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:59,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:45:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:45:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:45:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:59,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:59,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:59,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:59,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:59,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:59,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:59,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:59,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:59,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:45:59,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:59,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:45:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:59,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370512140] [2020-09-25 06:45:59,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:59,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:45:59,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303683626] [2020-09-25 06:45:59,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:45:59,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:59,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:45:59,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:45:59,831 INFO L87 Difference]: Start difference. First operand 1142 states and 1369 transitions. Second operand 8 states. [2020-09-25 06:46:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:03,785 INFO L93 Difference]: Finished difference Result 3395 states and 4369 transitions. [2020-09-25 06:46:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:03,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-09-25 06:46:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:03,804 INFO L225 Difference]: With dead ends: 3395 [2020-09-25 06:46:03,804 INFO L226 Difference]: Without dead ends: 2164 [2020-09-25 06:46:03,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:03,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2020-09-25 06:46:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2109. [2020-09-25 06:46:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2020-09-25 06:46:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2514 transitions. [2020-09-25 06:46:03,888 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2514 transitions. Word has length 196 [2020-09-25 06:46:03,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:03,889 INFO L479 AbstractCegarLoop]: Abstraction has 2109 states and 2514 transitions. [2020-09-25 06:46:03,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:46:03,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2514 transitions. [2020-09-25 06:46:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 06:46:03,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:03,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:03,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:03,900 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:03,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1388580762, now seen corresponding path program 1 times [2020-09-25 06:46:03,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:03,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448088489] [2020-09-25 06:46:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:03,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:08,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:08,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 06:46:08,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:46:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:46:08,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:08,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:46:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:46:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:09,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:09,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:09,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:09,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:46:09,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:09,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:46:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:09,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:09,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:46:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 06:46:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:09,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:46:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:09,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448088489] [2020-09-25 06:46:09,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:09,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:46:09,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21037946] [2020-09-25 06:46:09,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:09,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:09,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:09,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:09,312 INFO L87 Difference]: Start difference. First operand 2109 states and 2514 transitions. Second operand 7 states. [2020-09-25 06:46:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:11,733 INFO L93 Difference]: Finished difference Result 6258 states and 7581 transitions. [2020-09-25 06:46:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:11,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 06:46:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:11,757 INFO L225 Difference]: With dead ends: 6258 [2020-09-25 06:46:11,757 INFO L226 Difference]: Without dead ends: 4170 [2020-09-25 06:46:11,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2020-09-25 06:46:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3864. [2020-09-25 06:46:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3864 states. [2020-09-25 06:46:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 4648 transitions. [2020-09-25 06:46:11,885 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 4648 transitions. Word has length 203 [2020-09-25 06:46:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:11,885 INFO L479 AbstractCegarLoop]: Abstraction has 3864 states and 4648 transitions. [2020-09-25 06:46:11,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 4648 transitions. [2020-09-25 06:46:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 06:46:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:11,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:11,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:46:11,901 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash -424052664, now seen corresponding path program 1 times [2020-09-25 06:46:11,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:11,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290983628] [2020-09-25 06:46:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking...