/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:53,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:53,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:53,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:53,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:53,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:53,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:53,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:53,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:53,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:53,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:53,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:53,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:53,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:53,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:53,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:53,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:53,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:53,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:53,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:53,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:53,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:53,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:53,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:53,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:53,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:53,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:53,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:53,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:53,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:53,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:53,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:53,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:53,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:53,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:53,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:53,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:53,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:53,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:53,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:53,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:53,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:17:53,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:53,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:53,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:53,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:53,924 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:53,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:53,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:53,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:53,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:53,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:53,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:53,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:53,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:53,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:53,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:53,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:53,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:53,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:53,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:53,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:53,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:53,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:53,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:53,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:53,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:53,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:53,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:53,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:53,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:53,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:17:54,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:54,462 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:54,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:54,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:54,469 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:54,471 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 11:17:54,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec4239da/224fca219b2542b59450b93a4d64a54f/FLAGea2e4dd1b [2020-09-25 11:17:55,234 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:55,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 11:17:55,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec4239da/224fca219b2542b59450b93a4d64a54f/FLAGea2e4dd1b [2020-09-25 11:17:55,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec4239da/224fca219b2542b59450b93a4d64a54f [2020-09-25 11:17:55,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:55,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:55,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:55,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:55,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:55,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:55" (1/1) ... [2020-09-25 11:17:55,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df9f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:55, skipping insertion in model container [2020-09-25 11:17:55,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:55" (1/1) ... [2020-09-25 11:17:55,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:55,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:56,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:56,108 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:56,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:56,397 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:56,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56 WrapperNode [2020-09-25 11:17:56,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:56,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:56,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:56,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:56,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (1/1) ... [2020-09-25 11:17:56,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (1/1) ... [2020-09-25 11:17:56,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (1/1) ... [2020-09-25 11:17:56,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (1/1) ... [2020-09-25 11:17:56,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (1/1) ... [2020-09-25 11:17:56,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (1/1) ... [2020-09-25 11:17:56,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (1/1) ... [2020-09-25 11:17:56,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:56,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:56,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:56,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:56,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:57,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:57,992 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:58,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:58 BoogieIcfgContainer [2020-09-25 11:17:58,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:58,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:58,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:58,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:58,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:55" (1/3) ... [2020-09-25 11:17:58,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5eeb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:58, skipping insertion in model container [2020-09-25 11:17:58,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:56" (2/3) ... [2020-09-25 11:17:58,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5eeb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:58, skipping insertion in model container [2020-09-25 11:17:58,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:58" (3/3) ... [2020-09-25 11:17:58,012 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-25 11:17:58,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:58,037 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:58,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:58,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:58,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:58,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:58,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:58,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:58,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:58,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:58,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 11:17:58,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:58,153 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] [2020-09-25 11:17:58,153 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:58,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:58,161 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-25 11:17:58,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:58,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802701458] [2020-09-25 11:17:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:59,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:03,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 11:18:03,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 11:18:03,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:03,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:03,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:18:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 11:18:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:18:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:03,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:03,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:18:03,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:03,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:18:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:03,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802701458] [2020-09-25 11:18:03,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:03,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:03,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438583491] [2020-09-25 11:18:03,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:03,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:03,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:03,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:03,851 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:18:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:06,048 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 11:18:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:06,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-25 11:18:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:06,095 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 11:18:06,095 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 11:18:06,107 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 11:18:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 11:18:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 11:18:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 11:18:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 11:18:06,211 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-25 11:18:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:06,212 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 11:18:06,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 11:18:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 11:18:06,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:06,220 INFO L422 BasicCegarLoop]: trace histogram [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 11:18:06,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:06,221 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:06,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-25 11:18:06,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:06,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317108973] [2020-09-25 11:18:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:11,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 11:18:11,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:11,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:18:11,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:11,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:11,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:11,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:18:11,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:18:11,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:11,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:11,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:11,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:18:11,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:11,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:11,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:11,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:18:11,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:18:11,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:11,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:18:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:11,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317108973] [2020-09-25 11:18:11,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:11,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:11,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511672376] [2020-09-25 11:18:11,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:11,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:11,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:11,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:11,599 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 11:18:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:13,546 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 11:18:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:13,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 11:18:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:13,554 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 11:18:13,554 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 11:18:13,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 11:18:13,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 11:18:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 11:18:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 11:18:13,604 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 166 [2020-09-25 11:18:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:13,605 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 11:18:13,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 11:18:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 11:18:13,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:13,611 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 11:18:13,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:13,611 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:13,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:13,612 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-25 11:18:13,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:13,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185939432] [2020-09-25 11:18:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:18,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 11:18:18,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:18:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 11:18:18,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:18,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:18:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 11:18:18,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:19,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:19,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:19,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:18:19,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:19,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:19,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:19,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:18:19,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:18:19,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:19,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:18:19,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:18:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:19,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:19,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:18:19,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 11:18:19,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:19,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:18:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:18:19,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:18:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:18:19,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185939432] [2020-09-25 11:18:19,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:19,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:19,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545680746] [2020-09-25 11:18:19,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:19,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:19,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:19,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:19,774 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 10 states. [2020-09-25 11:18:20,753 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-09-25 11:18:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:25,564 INFO L93 Difference]: Finished difference Result 2923 states and 3892 transitions. [2020-09-25 11:18:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:18:25,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 184 [2020-09-25 11:18:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:25,586 INFO L225 Difference]: With dead ends: 2923 [2020-09-25 11:18:25,587 INFO L226 Difference]: Without dead ends: 1764 [2020-09-25 11:18:25,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:18:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2020-09-25 11:18:25,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1740. [2020-09-25 11:18:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-09-25 11:18:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2134 transitions. [2020-09-25 11:18:25,705 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2134 transitions. Word has length 184 [2020-09-25 11:18:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:25,706 INFO L479 AbstractCegarLoop]: Abstraction has 1740 states and 2134 transitions. [2020-09-25 11:18:25,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2134 transitions. [2020-09-25 11:18:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 11:18:25,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:25,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:25,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:25,717 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-25 11:18:25,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:25,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421553670] [2020-09-25 11:18:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:26,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 11:18:30,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 11:18:30,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:30,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 11:18:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 11:18:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:30,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:30,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:30,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:30,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:30,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:18:30,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:30,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:30,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:31,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:31,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:31,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 11:18:31,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:31,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 11:18:31,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:31,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:18:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:31,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421553670] [2020-09-25 11:18:31,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:31,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:31,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412490666] [2020-09-25 11:18:31,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:31,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:31,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:31,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:31,187 INFO L87 Difference]: Start difference. First operand 1740 states and 2134 transitions. Second operand 5 states. [2020-09-25 11:18:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:33,637 INFO L93 Difference]: Finished difference Result 4642 states and 5885 transitions. [2020-09-25 11:18:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:33,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 11:18:33,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:33,653 INFO L225 Difference]: With dead ends: 4642 [2020-09-25 11:18:33,654 INFO L226 Difference]: Without dead ends: 2759 [2020-09-25 11:18:33,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2020-09-25 11:18:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2678. [2020-09-25 11:18:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2678 states. [2020-09-25 11:18:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3335 transitions. [2020-09-25 11:18:33,750 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3335 transitions. Word has length 191 [2020-09-25 11:18:33,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:33,750 INFO L479 AbstractCegarLoop]: Abstraction has 2678 states and 3335 transitions. [2020-09-25 11:18:33,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3335 transitions. [2020-09-25 11:18:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 11:18:33,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:33,765 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:33,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:33,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:33,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:33,766 INFO L82 PathProgramCache]: Analyzing trace with hash -755789642, now seen corresponding path program 1 times [2020-09-25 11:18:33,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:33,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745632798] [2020-09-25 11:18:33,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:33,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:33,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:38,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 11:18:38,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 11:18:38,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:38,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 11:18:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 11:18:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:38,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:38,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:38,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:38,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:18:38,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:38,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:38,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:38,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:38,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:38,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:38,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:38,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:38,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:18:38,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:18:38,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:38,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:38,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:18:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:39,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:18:39,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:18:39,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:39,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:18:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 11:18:39,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745632798] [2020-09-25 11:18:39,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:39,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:39,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550205497] [2020-09-25 11:18:39,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:39,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:39,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:39,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:39,108 INFO L87 Difference]: Start difference. First operand 2678 states and 3335 transitions. Second operand 5 states. [2020-09-25 11:18:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:41,061 INFO L93 Difference]: Finished difference Result 6234 states and 7908 transitions. [2020-09-25 11:18:41,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:41,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-09-25 11:18:41,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:41,088 INFO L225 Difference]: With dead ends: 6234 [2020-09-25 11:18:41,088 INFO L226 Difference]: Without dead ends: 2601 [2020-09-25 11:18:41,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2020-09-25 11:18:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2601. [2020-09-25 11:18:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2020-09-25 11:18:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3162 transitions. [2020-09-25 11:18:41,192 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3162 transitions. Word has length 200 [2020-09-25 11:18:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:41,192 INFO L479 AbstractCegarLoop]: Abstraction has 2601 states and 3162 transitions. [2020-09-25 11:18:41,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3162 transitions. [2020-09-25 11:18:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 11:18:41,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:41,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:18:41,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:41,216 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash 37270687, now seen corresponding path program 1 times [2020-09-25 11:18:41,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:41,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855845925] [2020-09-25 11:18:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking...