/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:15:22,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:15:22,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:15:22,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:15:22,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:15:22,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:15:22,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:15:22,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:15:22,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:15:22,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:15:22,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:15:22,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:15:22,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:15:22,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:15:22,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:15:22,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:15:22,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:15:22,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:15:22,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:15:22,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:15:22,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:15:22,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:15:22,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:15:22,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:15:22,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:15:22,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:15:22,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:15:22,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:15:22,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:15:22,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:15:22,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:15:22,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:15:22,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:15:22,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:15:22,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:15:22,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:15:22,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:15:22,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:15:22,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:15:22,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:15:22,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:15:22,110 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 [2020-10-12 12:15:22,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:15:22,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:15:22,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:15:22,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:15:22,135 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:15:22,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:15:22,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:15:22,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:15:22,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:15:22,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:15:22,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:15:22,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:15:22,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:15:22,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:15:22,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:15:22,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:15:22,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:15:22,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:15:22,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:15:22,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:15:22,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:15:22,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:15:22,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:15:22,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:15:22,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:15:22,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:15:22,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:15:22,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:15:22,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:15:22,143 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 12:15:22,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:15:22,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:15:22,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:15:22,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:15:22,509 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:15:22,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label48.c [2020-10-12 12:15:22,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e04ccaf4/4cee242bc37442e1a6c5ddc6cb7917a2/FLAG41d2c4811 [2020-10-12 12:15:23,535 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:15:23,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label48.c [2020-10-12 12:15:23,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e04ccaf4/4cee242bc37442e1a6c5ddc6cb7917a2/FLAG41d2c4811 [2020-10-12 12:15:23,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e04ccaf4/4cee242bc37442e1a6c5ddc6cb7917a2 [2020-10-12 12:15:23,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:15:23,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:15:23,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:15:23,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:15:23,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:15:23,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:15:23" (1/1) ... [2020-10-12 12:15:23,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1c28a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:23, skipping insertion in model container [2020-10-12 12:15:23,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:15:23" (1/1) ... [2020-10-12 12:15:23,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:15:24,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:15:26,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:15:26,487 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:15:27,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:15:27,731 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:15:27,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27 WrapperNode [2020-10-12 12:15:27,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:15:27,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:15:27,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:15:27,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:15:27,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (1/1) ... [2020-10-12 12:15:27,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (1/1) ... [2020-10-12 12:15:27,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (1/1) ... [2020-10-12 12:15:27,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (1/1) ... [2020-10-12 12:15:27,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (1/1) ... [2020-10-12 12:15:28,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (1/1) ... [2020-10-12 12:15:28,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (1/1) ... [2020-10-12 12:15:28,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:15:28,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:15:28,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:15:28,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:15:28,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (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 [2020-10-12 12:15:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:15:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:15:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:15:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:15:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:15:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:15:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:15:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:15:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:15:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:15:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:15:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:15:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:15:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:15:28,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:15:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:15:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:15:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:15:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:15:35,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:15:35,372 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:15:35,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:15:35 BoogieIcfgContainer [2020-10-12 12:15:35,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:15:35,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:15:35,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:15:35,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:15:35,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:15:23" (1/3) ... [2020-10-12 12:15:35,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381cf160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:15:35, skipping insertion in model container [2020-10-12 12:15:35,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:27" (2/3) ... [2020-10-12 12:15:35,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381cf160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:15:35, skipping insertion in model container [2020-10-12 12:15:35,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:15:35" (3/3) ... [2020-10-12 12:15:35,397 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label48.c [2020-10-12 12:15:35,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:15:35,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:15:35,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:15:35,465 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:15:35,465 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:15:35,465 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:15:35,465 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:15:35,465 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:15:35,466 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:15:35,466 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:15:35,466 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:15:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:15:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2020-10-12 12:15:35,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:15:35,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:15:35,563 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:15:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:15:35,570 INFO L82 PathProgramCache]: Analyzing trace with hash 830526608, now seen corresponding path program 1 times [2020-10-12 12:15:35,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:15:35,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314460988] [2020-10-12 12:15:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:15:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:37,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:41,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:41,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 969 [2020-10-12 12:15:41,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:15:41,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-12 12:15:41,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:15:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:15:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:15:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:15:44,458 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 57 [2020-10-12 12:15:45,740 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:15:45,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:15:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:45,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:45,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:15:45,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:15:45,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 12:15:45,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:45,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:15:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:15:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:15:45,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:15:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:15:57,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314460988] [2020-10-12 12:15:57,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:15:57,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-12 12:15:57,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895918207] [2020-10-12 12:15:57,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 12:15:57,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:15:57,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 12:15:57,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-12 12:15:57,667 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 20 states. [2020-10-12 12:15:58,048 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:15:58,687 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 166 [2020-10-12 12:15:59,291 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 166 [2020-10-12 12:15:59,912 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 174 [2020-10-12 12:16:03,516 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 173 [2020-10-12 12:16:06,320 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 172 [2020-10-12 12:16:08,572 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-12 12:16:09,189 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 169 [2020-10-12 12:16:10,086 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 168 [2020-10-12 12:16:18,984 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 161 [2020-10-12 12:16:19,585 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 166 [2020-10-12 12:16:22,250 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 165 [2020-10-12 12:16:29,026 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 159 [2020-10-12 12:16:29,626 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 163 [2020-10-12 12:16:31,900 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-12 12:16:43,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:16:43,136 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:16:43,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:16:43,141 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 953 [2020-10-12 12:16:43,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:16:43,184 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:16:43,184 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:16:43,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 12:16:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:16:43,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:16:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:16:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:16:43,360 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 953 [2020-10-12 12:16:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:16:43,362 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:16:43,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 12:16:43,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:16:43,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2020-10-12 12:16:43,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:16:43,409 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:16:43,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:16:43,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:16:43,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:16:43,411 INFO L82 PathProgramCache]: Analyzing trace with hash 560680989, now seen corresponding path program 1 times [2020-10-12 12:16:43,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:16:43,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265215171] [2020-10-12 12:16:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:16:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:44,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:48,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:48,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1041 [2020-10-12 12:16:48,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:16:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-12 12:16:48,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:16:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:16:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 960 [2020-10-12 12:16:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:16:50,153 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:16:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:16:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:50,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:50,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:50,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:16:50,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:16:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:16:50,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:16:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:16:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:16:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:16:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:16:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:50,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:50,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:16:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:16:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 12:16:50,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:16:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:16:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:16:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:16:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:16:52,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265215171] [2020-10-12 12:16:52,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:16:52,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:16:52,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076788183] [2020-10-12 12:16:52,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:16:52,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:16:52,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:16:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:16:52,213 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:16:52,656 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:17:07,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:07,448 INFO L93 Difference]: Finished difference Result 4397 states and 7435 transitions. [2020-10-12 12:17:07,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:17:07,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1023 [2020-10-12 12:17:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:07,469 INFO L225 Difference]: With dead ends: 4397 [2020-10-12 12:17:07,469 INFO L226 Difference]: Without dead ends: 3138 [2020-10-12 12:17:07,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:17:07,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-12 12:17:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3087. [2020-10-12 12:17:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-12 12:17:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4566 transitions. [2020-10-12 12:17:07,561 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4566 transitions. Word has length 1023 [2020-10-12 12:17:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:07,563 INFO L479 AbstractCegarLoop]: Abstraction has 3087 states and 4566 transitions. [2020-10-12 12:17:07,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:17:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4566 transitions. [2020-10-12 12:17:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2020-10-12 12:17:07,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:07,581 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:17:07,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:17:07,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:07,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2138537270, now seen corresponding path program 1 times [2020-10-12 12:17:07,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:07,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671708976] [2020-10-12 12:17:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:07,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:13,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:13,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-12 12:17:13,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:17:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5596 [2020-10-12 12:17:13,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:17:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:17:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 12:17:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:13,989 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:17:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:17:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:14,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:14,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:17:14,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:14,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 12:17:14,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:17:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:17:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:17:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:14,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:14,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:14,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:17:14,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-12 12:17:14,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:17:14,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:17:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:14,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:14,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:14,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:17:14,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 12:17:14,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:17:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 12:17:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 12:17:15,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671708976] [2020-10-12 12:17:15,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:17:15,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:17:15,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962965632] [2020-10-12 12:17:15,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:17:15,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:15,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:17:15,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:17:15,147 INFO L87 Difference]: Start difference. First operand 3087 states and 4566 transitions. Second operand 8 states. [2020-10-12 12:17:15,311 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:17:16,394 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:17:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:33,348 INFO L93 Difference]: Finished difference Result 7679 states and 12113 transitions. [2020-10-12 12:17:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:17:33,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1032 [2020-10-12 12:17:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:33,378 INFO L225 Difference]: With dead ends: 7679 [2020-10-12 12:17:33,379 INFO L226 Difference]: Without dead ends: 5352 [2020-10-12 12:17:33,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 12:17:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2020-10-12 12:17:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5289. [2020-10-12 12:17:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5289 states. [2020-10-12 12:17:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 7682 transitions. [2020-10-12 12:17:33,533 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 7682 transitions. Word has length 1032 [2020-10-12 12:17:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:33,534 INFO L479 AbstractCegarLoop]: Abstraction has 5289 states and 7682 transitions. [2020-10-12 12:17:33,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:17:33,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 7682 transitions. [2020-10-12 12:17:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2020-10-12 12:17:33,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:33,560 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:17:33,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:17:33,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:33,561 INFO L82 PathProgramCache]: Analyzing trace with hash -213961630, now seen corresponding path program 1 times [2020-10-12 12:17:33,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:33,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466735636] [2020-10-12 12:17:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:34,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:39,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:39,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1059 [2020-10-12 12:17:39,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:17:39,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5168 [2020-10-12 12:17:39,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:39,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:17:39,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:17:39,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 12:17:39,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:39,709 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:17:39,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:17:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:39,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:39,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:17:39,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:39,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 12:17:39,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:17:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:17:39,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:17:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:40,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:40,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:17:40,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 12:17:40,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:17:40,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:17:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:40,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:40,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:17:40,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 12:17:40,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:17:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 12:17:42,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466735636] [2020-10-12 12:17:42,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:17:42,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:17:42,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416015981] [2020-10-12 12:17:42,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:17:42,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:42,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:17:42,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:17:42,747 INFO L87 Difference]: Start difference. First operand 5289 states and 7682 transitions. Second operand 8 states. [2020-10-12 12:17:42,919 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:17:43,694 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:18:02,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:02,238 INFO L93 Difference]: Finished difference Result 14645 states and 22294 transitions. [2020-10-12 12:18:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 12:18:02,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1039 [2020-10-12 12:18:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:02,283 INFO L225 Difference]: With dead ends: 14645 [2020-10-12 12:18:02,283 INFO L226 Difference]: Without dead ends: 10116 [2020-10-12 12:18:02,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-12 12:18:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2020-10-12 12:18:02,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 9711. [2020-10-12 12:18:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9711 states. [2020-10-12 12:18:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9711 states to 9711 states and 13568 transitions. [2020-10-12 12:18:02,553 INFO L78 Accepts]: Start accepts. Automaton has 9711 states and 13568 transitions. Word has length 1039 [2020-10-12 12:18:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:02,554 INFO L479 AbstractCegarLoop]: Abstraction has 9711 states and 13568 transitions. [2020-10-12 12:18:02,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:18:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 9711 states and 13568 transitions. [2020-10-12 12:18:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-10-12 12:18:02,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:02,592 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:18:02,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:18:02,592 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:02,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1169577204, now seen corresponding path program 1 times [2020-10-12 12:18:02,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:02,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664794426] [2020-10-12 12:18:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:08,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:08,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1083 [2020-10-12 12:18:08,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 12:18:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5262 [2020-10-12 12:18:08,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:18:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:18:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 12:18:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:08,378 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:08,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:08,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:08,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:18:08,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:18:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:08,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:08,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:08,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:08,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:18:08,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 12:18:08,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:18:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:08,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:18:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:08,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:08,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:08,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:18:08,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:08,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 12:18:08,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 12:18:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 12:18:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:08,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:08,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 12:18:08,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:08,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 12:18:08,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 12:18:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 12:18:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:08,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:08,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 12:18:08,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:18:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 12:18:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 103 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 12:18:09,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664794426] [2020-10-12 12:18:09,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:09,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:18:09,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090872574] [2020-10-12 12:18:09,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:18:09,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:09,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:18:09,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:18:09,631 INFO L87 Difference]: Start difference. First operand 9711 states and 13568 transitions. Second operand 8 states. [2020-10-12 12:18:09,799 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:18:11,292 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:18:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:28,588 INFO L93 Difference]: Finished difference Result 23767 states and 33610 transitions. [2020-10-12 12:18:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 12:18:28,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1059 [2020-10-12 12:18:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:28,639 INFO L225 Difference]: With dead ends: 23767 [2020-10-12 12:18:28,640 INFO L226 Difference]: Without dead ends: 14816 [2020-10-12 12:18:28,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 12:18:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14816 states. [2020-10-12 12:18:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14816 to 14309. [2020-10-12 12:18:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14309 states. [2020-10-12 12:18:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14309 states to 14309 states and 19847 transitions. [2020-10-12 12:18:29,015 INFO L78 Accepts]: Start accepts. Automaton has 14309 states and 19847 transitions. Word has length 1059 [2020-10-12 12:18:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:29,016 INFO L479 AbstractCegarLoop]: Abstraction has 14309 states and 19847 transitions. [2020-10-12 12:18:29,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:18:29,016 INFO L276 IsEmpty]: Start isEmpty. Operand 14309 states and 19847 transitions. [2020-10-12 12:18:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2020-10-12 12:18:29,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:29,059 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, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:18:29,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:18:29,060 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1204776880, now seen corresponding path program 1 times [2020-10-12 12:18:29,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:29,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74915647] [2020-10-12 12:18:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:30,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:34,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-12 12:18:34,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:18:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 12:18:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:18:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-12 12:18:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 960 [2020-10-12 12:18:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:34,904 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:34,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:34,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:34,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 12:18:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:34,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:35,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:35,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:18:35,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:35,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 12:18:35,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:35,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:18:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:35,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 12:18:35,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:35,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 12:18:35,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 12:18:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 12:18:36,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74915647] [2020-10-12 12:18:36,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:36,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:18:36,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649270394] [2020-10-12 12:18:36,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:18:36,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:36,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:18:36,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:18:36,085 INFO L87 Difference]: Start difference. First operand 14309 states and 19847 transitions. Second operand 5 states. [2020-10-12 12:18:36,715 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:18:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:51,209 INFO L93 Difference]: Finished difference Result 34306 states and 49789 transitions. [2020-10-12 12:18:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:18:51,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1071 [2020-10-12 12:18:51,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:51,292 INFO L225 Difference]: With dead ends: 34306 [2020-10-12 12:18:51,292 INFO L226 Difference]: Without dead ends: 20757 [2020-10-12 12:18:51,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:18:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20757 states. [2020-10-12 12:18:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20757 to 20693. [2020-10-12 12:18:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20693 states. [2020-10-12 12:18:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20693 states to 20693 states and 28359 transitions. [2020-10-12 12:18:51,789 INFO L78 Accepts]: Start accepts. Automaton has 20693 states and 28359 transitions. Word has length 1071 [2020-10-12 12:18:51,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:51,792 INFO L479 AbstractCegarLoop]: Abstraction has 20693 states and 28359 transitions. [2020-10-12 12:18:51,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:18:51,793 INFO L276 IsEmpty]: Start isEmpty. Operand 20693 states and 28359 transitions. [2020-10-12 12:18:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2020-10-12 12:18:51,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:51,870 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:18:51,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 12:18:51,870 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 109689621, now seen corresponding path program 1 times [2020-10-12 12:18:51,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:51,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425277998] [2020-10-12 12:18:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:57,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:57,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1107 [2020-10-12 12:18:57,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 12:18:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-12 12:18:57,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:18:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:18:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:18:57,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:57,602 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:57,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:57,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 12:18:57,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:18:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:18:57,755 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:18:57,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:57,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:58,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:58,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:18:58,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:58,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-12 12:18:58,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:58,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:18:58,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:18:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:18:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:58,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:58,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 12:18:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 12:18:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 12:18:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 12:18:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:58,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:58,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:58,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 12:18:58,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 12:18:58,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 12:18:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:58,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 12:18:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:58,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:58,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 12:18:58,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:18:58,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 12:18:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:58,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 118 proven. 45 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-12 12:18:59,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425277998] [2020-10-12 12:18:59,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:59,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:18:59,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905025964] [2020-10-12 12:18:59,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:18:59,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:59,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:18:59,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:18:59,327 INFO L87 Difference]: Start difference. First operand 20693 states and 28359 transitions. Second operand 7 states. [2020-10-12 12:18:59,488 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:19:00,760 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 136