/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem13_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:26:02,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:26:02,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:26:02,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:26:02,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:26:02,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:26:02,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:26:02,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:26:02,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:26:02,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:26:02,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:26:02,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:26:02,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:26:02,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:26:02,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:26:02,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:26:02,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:26:02,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:26:02,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:26:02,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:26:02,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:26:02,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:26:02,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:26:02,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:26:02,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:26:02,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:26:02,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:26:02,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:26:02,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:26:02,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:26:02,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:26:02,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:26:02,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:26:02,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:26:02,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:26:02,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:26:02,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:26:02,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:26:02,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:26:02,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:26:02,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:26:02,136 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 [2020-10-14 21:26:02,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:26:02,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:26:02,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:26:02,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:26:02,174 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:26:02,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:26:02,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:26:02,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:26:02,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:26:02,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:26:02,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:26:02,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:26:02,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:26:02,177 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:26:02,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:26:02,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:26:02,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:26:02,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:26:02,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:26:02,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:26:02,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:26:02,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:26:02,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:26:02,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:26:02,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:26:02,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:26:02,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:26:02,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:26:02,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:26:02,180 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:26:02,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:26:02,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:26:02,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:26:02,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:26:02,532 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:26:02,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18.c [2020-10-14 21:26:02,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad2fe01df/2f07e1a8255c4a0b9a741e610a2606f2/FLAG57e5003ff [2020-10-14 21:26:03,358 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:26:03,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label18.c [2020-10-14 21:26:03,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad2fe01df/2f07e1a8255c4a0b9a741e610a2606f2/FLAG57e5003ff [2020-10-14 21:26:03,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad2fe01df/2f07e1a8255c4a0b9a741e610a2606f2 [2020-10-14 21:26:03,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:26:03,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:26:03,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:26:03,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:26:03,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:26:03,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:26:03" (1/1) ... [2020-10-14 21:26:03,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f72e2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:03, skipping insertion in model container [2020-10-14 21:26:03,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:26:03" (1/1) ... [2020-10-14 21:26:03,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:26:03,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:26:05,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:26:05,401 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:26:06,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:26:06,271 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:26:06,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06 WrapperNode [2020-10-14 21:26:06,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:26:06,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:26:06,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:26:06,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:26:06,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (1/1) ... [2020-10-14 21:26:06,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (1/1) ... [2020-10-14 21:26:06,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (1/1) ... [2020-10-14 21:26:06,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (1/1) ... [2020-10-14 21:26:06,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (1/1) ... [2020-10-14 21:26:06,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (1/1) ... [2020-10-14 21:26:06,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (1/1) ... [2020-10-14 21:26:06,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:26:06,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:26:06,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:26:06,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:26:06,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (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 [2020-10-14 21:26:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:26:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:26:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:26:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:26:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:26:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:26:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:26:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:26:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:26:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:26:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:26:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:26:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:26:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:26:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:26:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:26:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:26:17,678 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:26:17,679 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:26:17,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:17 BoogieIcfgContainer [2020-10-14 21:26:17,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:26:17,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:26:17,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:26:17,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:26:17,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:26:03" (1/3) ... [2020-10-14 21:26:17,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404eaee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:17, skipping insertion in model container [2020-10-14 21:26:17,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:06" (2/3) ... [2020-10-14 21:26:17,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404eaee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:17, skipping insertion in model container [2020-10-14 21:26:17,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:17" (3/3) ... [2020-10-14 21:26:17,710 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label18.c [2020-10-14 21:26:17,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:26:17,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:26:17,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:26:17,782 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:26:17,783 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:26:17,783 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:26:17,783 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:26:17,783 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:26:17,783 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:26:17,783 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:26:17,784 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:26:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:26:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 21:26:17,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:17,836 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] [2020-10-14 21:26:17,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:17,843 INFO L82 PathProgramCache]: Analyzing trace with hash 597964976, now seen corresponding path program 1 times [2020-10-14 21:26:17,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:17,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044878480] [2020-10-14 21:26:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:18,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:18,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 21:26:18,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-14 21:26:18,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:18,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:18,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:18,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:26:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:26:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:26:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:18,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:18,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044878480] [2020-10-14 21:26:18,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:18,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:26:18,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068737026] [2020-10-14 21:26:18,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:26:18,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:18,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:26:18,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:26:18,777 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 21:26:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:42,691 INFO L93 Difference]: Finished difference Result 4116 states and 7691 transitions. [2020-10-14 21:26:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:26:42,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 21:26:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:42,735 INFO L225 Difference]: With dead ends: 4116 [2020-10-14 21:26:42,736 INFO L226 Difference]: Without dead ends: 2899 [2020-10-14 21:26:42,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-14 21:26:42,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2762. [2020-10-14 21:26:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-14 21:26:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4546 transitions. [2020-10-14 21:26:42,932 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4546 transitions. Word has length 69 [2020-10-14 21:26:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:42,932 INFO L479 AbstractCegarLoop]: Abstraction has 2762 states and 4546 transitions. [2020-10-14 21:26:42,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:26:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4546 transitions. [2020-10-14 21:26:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 21:26:42,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:42,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:26:42,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:26:42,940 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:42,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:42,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1418368328, now seen corresponding path program 1 times [2020-10-14 21:26:42,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:42,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138233335] [2020-10-14 21:26:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:44,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:44,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:26:44,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-14 21:26:44,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:44,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 21:26:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 21:26:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:26:44,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:44,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:44,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:44,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:44,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:26:44,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:44,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:26:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:26:44,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:44,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:44,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:44,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:26:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 21:26:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:44,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:26:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:44,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138233335] [2020-10-14 21:26:44,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:26:44,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:26:44,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077855994] [2020-10-14 21:26:44,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:26:44,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:44,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:26:44,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:26:44,764 INFO L87 Difference]: Start difference. First operand 2762 states and 4546 transitions. Second operand 5 states. [2020-10-14 21:27:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:02,006 INFO L93 Difference]: Finished difference Result 8037 states and 13368 transitions. [2020-10-14 21:27:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:27:02,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 21:27:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:02,046 INFO L225 Difference]: With dead ends: 8037 [2020-10-14 21:27:02,046 INFO L226 Difference]: Without dead ends: 5281 [2020-10-14 21:27:02,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:27:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2020-10-14 21:27:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5258. [2020-10-14 21:27:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5258 states. [2020-10-14 21:27:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 8189 transitions. [2020-10-14 21:27:02,211 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 8189 transitions. Word has length 139 [2020-10-14 21:27:02,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:02,213 INFO L479 AbstractCegarLoop]: Abstraction has 5258 states and 8189 transitions. [2020-10-14 21:27:02,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:27:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 8189 transitions. [2020-10-14 21:27:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 21:27:02,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:02,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:27:02,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:27:02,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:02,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:02,227 INFO L82 PathProgramCache]: Analyzing trace with hash -462570439, now seen corresponding path program 1 times [2020-10-14 21:27:02,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:02,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042535071] [2020-10-14 21:27:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:02,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:03,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:03,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 21:27:03,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:27:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-14 21:27:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:03,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:27:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 21:27:03,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:03,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:03,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:03,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:03,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:27:03,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:03,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:03,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:03,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:04,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:04,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 21:27:04,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 21:27:04,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:04,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:27:04,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:27:04,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042535071] [2020-10-14 21:27:04,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:04,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:27:04,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321922262] [2020-10-14 21:27:04,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:04,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:04,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:04,368 INFO L87 Difference]: Start difference. First operand 5258 states and 8189 transitions. Second operand 7 states. [2020-10-14 21:27:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:26,987 INFO L93 Difference]: Finished difference Result 20569 states and 33047 transitions. [2020-10-14 21:27:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:27:26,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-14 21:27:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:27,079 INFO L225 Difference]: With dead ends: 20569 [2020-10-14 21:27:27,080 INFO L226 Difference]: Without dead ends: 15317 [2020-10-14 21:27:27,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:27:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15317 states. [2020-10-14 21:27:27,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15317 to 15255. [2020-10-14 21:27:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15255 states. [2020-10-14 21:27:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15255 states to 15255 states and 21795 transitions. [2020-10-14 21:27:27,614 INFO L78 Accepts]: Start accepts. Automaton has 15255 states and 21795 transitions. Word has length 178 [2020-10-14 21:27:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:27,619 INFO L479 AbstractCegarLoop]: Abstraction has 15255 states and 21795 transitions. [2020-10-14 21:27:27,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 15255 states and 21795 transitions. [2020-10-14 21:27:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 21:27:27,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:27,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:27:27,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:27:27,624 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:27,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:27,624 INFO L82 PathProgramCache]: Analyzing trace with hash -416398488, now seen corresponding path program 1 times [2020-10-14 21:27:27,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:27,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218926327] [2020-10-14 21:27:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:28,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:28,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:27:28,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:28,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-10-14 21:27:28,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:28,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:27:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:27:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:28,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:28,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:28,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:28,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:28,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:27:28,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:28,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:29,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:29,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 21:27:29,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 21:27:29,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:29,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:27:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:27:29,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218926327] [2020-10-14 21:27:29,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:27:29,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:27:29,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856709343] [2020-10-14 21:27:29,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:29,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:29,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:29,280 INFO L87 Difference]: Start difference. First operand 15255 states and 21795 transitions. Second operand 7 states. [2020-10-14 21:27:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:45,648 INFO L93 Difference]: Finished difference Result 36849 states and 56279 transitions. [2020-10-14 21:27:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:27:45,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-14 21:27:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:45,737 INFO L225 Difference]: With dead ends: 36849 [2020-10-14 21:27:45,737 INFO L226 Difference]: Without dead ends: 21600 [2020-10-14 21:27:45,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:27:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21600 states. [2020-10-14 21:27:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21600 to 21400. [2020-10-14 21:27:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21400 states. [2020-10-14 21:27:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21400 states to 21400 states and 30043 transitions. [2020-10-14 21:27:46,352 INFO L78 Accepts]: Start accepts. Automaton has 21400 states and 30043 transitions. Word has length 181 [2020-10-14 21:27:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:46,353 INFO L479 AbstractCegarLoop]: Abstraction has 21400 states and 30043 transitions. [2020-10-14 21:27:46,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 21400 states and 30043 transitions. [2020-10-14 21:27:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 21:27:46,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:46,359 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:27:46,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:27:46,360 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:46,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1054398408, now seen corresponding path program 1 times [2020-10-14 21:27:46,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:46,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705736407] [2020-10-14 21:27:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:46,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:51,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:51,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 21:27:51,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:27:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 21:27:51,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:51,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:27:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:27:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:51,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:51,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:51,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:51,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:27:51,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:51,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:27:51,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:27:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:51,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:51,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:27:51,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:27:51,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:51,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:27:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:51,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:27:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:51,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:51,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:27:51,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 21:27:51,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:51,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:27:51,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:27:52,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705736407] [2020-10-14 21:27:52,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:52,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:27:52,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989821226] [2020-10-14 21:27:52,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:52,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:52,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:52,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:52,011 INFO L87 Difference]: Start difference. First operand 21400 states and 30043 transitions. Second operand 7 states. [2020-10-14 21:28:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:18,814 INFO L93 Difference]: Finished difference Result 63008 states and 96277 transitions. [2020-10-14 21:28:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:28:18,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-14 21:28:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:19,004 INFO L225 Difference]: With dead ends: 63008 [2020-10-14 21:28:19,004 INFO L226 Difference]: Without dead ends: 42417 [2020-10-14 21:28:19,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:28:19,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42417 states. [2020-10-14 21:28:20,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42417 to 39679. [2020-10-14 21:28:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39679 states. [2020-10-14 21:28:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39679 states to 39679 states and 55573 transitions. [2020-10-14 21:28:20,266 INFO L78 Accepts]: Start accepts. Automaton has 39679 states and 55573 transitions. Word has length 239 [2020-10-14 21:28:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:20,267 INFO L479 AbstractCegarLoop]: Abstraction has 39679 states and 55573 transitions. [2020-10-14 21:28:20,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:28:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 39679 states and 55573 transitions. [2020-10-14 21:28:20,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 21:28:20,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:20,274 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:28:20,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:28:20,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:20,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:20,275 INFO L82 PathProgramCache]: Analyzing trace with hash -36477812, now seen corresponding path program 1 times [2020-10-14 21:28:20,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:20,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229941012] [2020-10-14 21:28:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:20,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:21,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:25,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:25,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 21:28:25,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:28:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 21:28:25,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:25,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:28:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:28:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-14 21:28:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:25,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:25,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:25,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:25,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:28:25,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:25,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:28:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:25,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:26,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:26,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:28:26,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:28:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-14 21:28:26,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:26,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:28:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 21:28:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:26,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:26,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:28:26,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 21:28:26,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:26,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:26,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:28:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 125 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:28:26,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229941012] [2020-10-14 21:28:26,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:28:26,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:28:26,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295173037] [2020-10-14 21:28:26,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:28:26,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:26,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:28:26,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:28:26,770 INFO L87 Difference]: Start difference. First operand 39679 states and 55573 transitions. Second operand 9 states. [2020-10-14 21:28:47,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:47,719 INFO L93 Difference]: Finished difference Result 98536 states and 145423 transitions. [2020-10-14 21:28:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 21:28:47,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2020-10-14 21:28:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:48,281 INFO L225 Difference]: With dead ends: 98536 [2020-10-14 21:28:48,281 INFO L226 Difference]: Without dead ends: 59666 [2020-10-14 21:28:48,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2020-10-14 21:28:48,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59666 states. [2020-10-14 21:28:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59666 to 57551. [2020-10-14 21:28:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57551 states. [2020-10-14 21:28:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57551 states to 57551 states and 80803 transitions. [2020-10-14 21:28:49,594 INFO L78 Accepts]: Start accepts. Automaton has 57551 states and 80803 transitions. Word has length 253 [2020-10-14 21:28:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:49,595 INFO L479 AbstractCegarLoop]: Abstraction has 57551 states and 80803 transitions. [2020-10-14 21:28:49,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:28:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 57551 states and 80803 transitions. [2020-10-14 21:28:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 21:28:49,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:49,601 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, 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, 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] [2020-10-14 21:28:49,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:28:49,602 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1978805844, now seen corresponding path program 1 times [2020-10-14 21:28:49,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:49,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012919203] [2020-10-14 21:28:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:49,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:52,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:54,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:54,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 21:28:54,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:28:54,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4422 [2020-10-14 21:28:54,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:54,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:28:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:28:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:28:54,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:54,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:54,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:54,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:54,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:28:54,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:54,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:54,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:28:54,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:54,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:28:54,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:54,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:54,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:28:54,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:28:54,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:54,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:28:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:54,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:28:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:54,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:54,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:28:54,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 21:28:54,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:54,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:28:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:28:54,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012919203] [2020-10-14 21:28:54,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:28:54,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:28:54,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137096437] [2020-10-14 21:28:54,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:28:54,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:54,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:28:54,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:28:54,950 INFO L87 Difference]: Start difference. First operand 57551 states and 80803 transitions. Second operand 7 states. [2020-10-14 21:29:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:20,098 INFO L93 Difference]: Finished difference Result 155281 states and 224083 transitions. [2020-10-14 21:29:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:29:20,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-14 21:29:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:20,467 INFO L225 Difference]: With dead ends: 155281 [2020-10-14 21:29:20,467 INFO L226 Difference]: Without dead ends: 98539 [2020-10-14 21:29:20,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:29:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98539 states. [2020-10-14 21:29:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98539 to 98378. [2020-10-14 21:29:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98378 states. [2020-10-14 21:29:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98378 states to 98378 states and 141942 transitions. [2020-10-14 21:29:22,995 INFO L78 Accepts]: Start accepts. Automaton has 98378 states and 141942 transitions. Word has length 269 [2020-10-14 21:29:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:22,996 INFO L479 AbstractCegarLoop]: Abstraction has 98378 states and 141942 transitions. [2020-10-14 21:29:22,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:29:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 98378 states and 141942 transitions. [2020-10-14 21:29:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-14 21:29:23,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:23,005 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:29:23,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:29:23,006 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:23,006 INFO L82 PathProgramCache]: Analyzing trace with hash -79819643, now seen corresponding path program 1 times [2020-10-14 21:29:23,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:23,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009161467] [2020-10-14 21:29:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:28,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:28,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-14 21:29:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:29:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 21:29:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:28,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:29:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:29:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:29:28,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:28,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:28,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:29:28,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:28,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:29:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:29:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:29:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:28,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:28,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:29:28,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:28,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 21:29:28,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:28,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:28,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:29:28,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 306 [2020-10-14 21:29:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:29:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:28,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:28,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:29:28,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 21:29:28,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:28,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:29:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-14 21:29:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:28,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:28,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:29:28,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:29:28,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:28,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:29:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 21:29:28,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:29:28,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:29:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 280 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 21:29:29,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009161467] [2020-10-14 21:29:29,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:29,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:29:29,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549939434] [2020-10-14 21:29:29,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:29:29,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:29,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:29:29,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:29,039 INFO L87 Difference]: Start difference. First operand 98378 states and 141942 transitions. Second operand 7 states.