/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:09:13,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:09:13,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:09:13,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:09:13,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:09:13,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:09:13,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:09:13,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:09:13,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:09:13,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:09:13,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:09:13,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:09:13,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:09:13,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:09:13,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:09:13,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:09:13,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:09:13,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:09:13,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:09:13,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:09:13,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:09:13,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:09:13,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:09:13,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:09:13,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:09:13,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:09:13,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:09:13,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:09:13,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:09:13,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:09:13,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:09:13,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:09:13,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:09:13,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:09:13,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:09:13,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:09:13,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:09:13,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:09:13,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:09:13,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:09:13,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:09:13,132 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 03:09:13,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:09:13,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:09:13,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:09:13,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:09:13,158 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:09:13,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:09:13,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:09:13,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:09:13,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:09:13,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:09:13,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:09:13,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:09:13,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:09:13,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:09:13,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:09:13,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:09:13,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:09:13,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:09:13,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:09:13,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:09:13,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:09:13,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:09:13,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:09:13,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:09:13,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:09:13,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:09:13,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:09:13,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:09:13,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:09:13,164 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:09:13,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:09:13,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:09:13,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:09:13,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:09:13,575 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:09:13,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45.c [2020-10-14 03:09:13,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65167c975/07ea47a5fe0e4be199d2cb489619e36b/FLAG66954b8d1 [2020-10-14 03:09:14,663 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:09:14,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label45.c [2020-10-14 03:09:14,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65167c975/07ea47a5fe0e4be199d2cb489619e36b/FLAG66954b8d1 [2020-10-14 03:09:15,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65167c975/07ea47a5fe0e4be199d2cb489619e36b [2020-10-14 03:09:15,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:09:15,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:09:15,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:09:15,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:09:15,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:09:15,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:09:15" (1/1) ... [2020-10-14 03:09:15,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:15, skipping insertion in model container [2020-10-14 03:09:15,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:09:15" (1/1) ... [2020-10-14 03:09:15,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:09:15,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:09:17,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:09:17,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:09:17,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:09:17,730 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:09:17,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17 WrapperNode [2020-10-14 03:09:17,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:09:17,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:09:17,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:09:17,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:09:17,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:17,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:17,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:17,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:17,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:18,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:18,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (1/1) ... [2020-10-14 03:09:18,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:09:18,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:09:18,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:09:18,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:09:18,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:09:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:09:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:09:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:09:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:09:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:09:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:09:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:09:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:09:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:09:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:09:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:09:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:09:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:09:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:09:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:09:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:09:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:09:30,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:09:30,437 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:09:30,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:09:30 BoogieIcfgContainer [2020-10-14 03:09:30,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:09:30,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:09:30,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:09:30,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:09:30,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:09:15" (1/3) ... [2020-10-14 03:09:30,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1770e9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:09:30, skipping insertion in model container [2020-10-14 03:09:30,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:09:17" (2/3) ... [2020-10-14 03:09:30,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1770e9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:09:30, skipping insertion in model container [2020-10-14 03:09:30,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:09:30" (3/3) ... [2020-10-14 03:09:30,471 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label45.c [2020-10-14 03:09:30,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:09:30,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:09:30,510 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:09:30,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:09:30,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:09:30,544 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:09:30,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:09:30,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:09:30,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:09:30,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:09:30,545 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:09:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:09:30,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 03:09:30,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:30,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:09:30,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:30,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1434155184, now seen corresponding path program 1 times [2020-10-14 03:09:30,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:30,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208489813] [2020-10-14 03:09:30,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:31,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:31,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 03:09:31,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:31,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-14 03:09:31,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:31,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:09:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:09:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 03:09:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:09:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:31,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:31,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:31,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:31,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 03:09:31,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:31,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:09:31,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:31,302 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 03:09:31,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208489813] [2020-10-14 03:09:31,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:09:31,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:09:31,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91065014] [2020-10-14 03:09:31,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:09:31,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:31,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:09:31,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:09:31,334 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:09:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:47,767 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2020-10-14 03:09:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:09:47,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 03:09:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:47,824 INFO L225 Difference]: With dead ends: 3204 [2020-10-14 03:09:47,825 INFO L226 Difference]: Without dead ends: 2006 [2020-10-14 03:09:47,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:47,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-14 03:09:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2020-10-14 03:09:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-14 03:09:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2020-10-14 03:09:48,034 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 13 [2020-10-14 03:09:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:48,036 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2020-10-14 03:09:48,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:09:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2020-10-14 03:09:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 03:09:48,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:48,042 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:09:48,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:09:48,044 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:48,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2043822807, now seen corresponding path program 1 times [2020-10-14 03:09:48,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:48,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171334620] [2020-10-14 03:09:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:48,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:49,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:49,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:09:49,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:09:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-14 03:09:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:49,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:09:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:09:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 03:09:49,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:09:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:49,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:49,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:49,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:09:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:49,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:09:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:09:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:09:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:49,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:49,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:09:49,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:49,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 03:09:49,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:49,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:09:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:49,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171334620] [2020-10-14 03:09:49,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:09:49,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:09:49,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5374637] [2020-10-14 03:09:49,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:49,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:49,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:49,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:49,592 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand 5 states. [2020-10-14 03:10:09,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:09,038 INFO L93 Difference]: Finished difference Result 5636 states and 9813 transitions. [2020-10-14 03:10:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:10:09,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-14 03:10:09,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:09,064 INFO L225 Difference]: With dead ends: 5636 [2020-10-14 03:10:09,065 INFO L226 Difference]: Without dead ends: 3722 [2020-10-14 03:10:09,071 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 03:10:09,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2020-10-14 03:10:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3703. [2020-10-14 03:10:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3703 states. [2020-10-14 03:10:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 5851 transitions. [2020-10-14 03:10:09,206 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 5851 transitions. Word has length 82 [2020-10-14 03:10:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:09,207 INFO L479 AbstractCegarLoop]: Abstraction has 3703 states and 5851 transitions. [2020-10-14 03:10:09,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:10:09,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 5851 transitions. [2020-10-14 03:10:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 03:10:09,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:09,212 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:10:09,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:10:09,212 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:09,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:09,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1490702155, now seen corresponding path program 1 times [2020-10-14 03:10:09,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:09,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188817666] [2020-10-14 03:10:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:09,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:09,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 03:10:09,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-14 03:10:09,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:09,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:10:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:10:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:10:09,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:09,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:09,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:09,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:09,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:09,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:10:09,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:09,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:10:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:10:09,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:10,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:10,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:10:10,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 03:10:10,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:10,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:10:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:10:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:10,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188817666] [2020-10-14 03:10:10,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:10:10,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:10:10,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029845925] [2020-10-14 03:10:10,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:10:10,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:10,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:10:10,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:10:10,267 INFO L87 Difference]: Start difference. First operand 3703 states and 5851 transitions. Second operand 7 states. [2020-10-14 03:10:10,395 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-14 03:10:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:41,924 INFO L93 Difference]: Finished difference Result 10969 states and 17779 transitions. [2020-10-14 03:10:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:10:41,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-14 03:10:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:41,981 INFO L225 Difference]: With dead ends: 10969 [2020-10-14 03:10:41,981 INFO L226 Difference]: Without dead ends: 7272 [2020-10-14 03:10:41,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:10:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2020-10-14 03:10:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7133. [2020-10-14 03:10:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2020-10-14 03:10:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 10451 transitions. [2020-10-14 03:10:42,304 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 10451 transitions. Word has length 88 [2020-10-14 03:10:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:42,305 INFO L479 AbstractCegarLoop]: Abstraction has 7133 states and 10451 transitions. [2020-10-14 03:10:42,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:10:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 10451 transitions. [2020-10-14 03:10:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 03:10:42,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:42,325 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:10:42,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:10:42,325 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:42,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1360633355, now seen corresponding path program 1 times [2020-10-14 03:10:42,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:42,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904538121] [2020-10-14 03:10:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:43,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:43,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:10:43,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:10:43,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1303 [2020-10-14 03:10:43,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:43,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-14 03:10:43,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 03:10:43,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:43,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:43,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:43,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 03:10:43,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:43,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:43,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:44,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:44,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:10:44,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:44,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 03:10:44,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:44,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:10:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:44,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904538121] [2020-10-14 03:10:44,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:44,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:10:44,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332315332] [2020-10-14 03:10:44,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:10:44,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:44,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:10:44,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:10:44,280 INFO L87 Difference]: Start difference. First operand 7133 states and 10451 transitions. Second operand 5 states. [2020-10-14 03:11:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:05,127 INFO L93 Difference]: Finished difference Result 20867 states and 31422 transitions. [2020-10-14 03:11:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:05,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-14 03:11:05,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:05,209 INFO L225 Difference]: With dead ends: 20867 [2020-10-14 03:11:05,210 INFO L226 Difference]: Without dead ends: 13740 [2020-10-14 03:11:05,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:11:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13740 states. [2020-10-14 03:11:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13740 to 13729. [2020-10-14 03:11:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13729 states. [2020-10-14 03:11:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13729 states to 13729 states and 18432 transitions. [2020-10-14 03:11:05,668 INFO L78 Accepts]: Start accepts. Automaton has 13729 states and 18432 transitions. Word has length 120 [2020-10-14 03:11:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:05,672 INFO L479 AbstractCegarLoop]: Abstraction has 13729 states and 18432 transitions. [2020-10-14 03:11:05,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 13729 states and 18432 transitions. [2020-10-14 03:11:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 03:11:05,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:05,683 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:11:05,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:11:05,683 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:05,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:05,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1883797838, now seen corresponding path program 1 times [2020-10-14 03:11:05,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:05,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14676070] [2020-10-14 03:11:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:06,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:06,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 03:11:06,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:11:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-14 03:11:06,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:06,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:11:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 03:11:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:06,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:06,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:06,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:11:06,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:06,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:07,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:07,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 03:11:07,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:11:07,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:07,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:11:07,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:07,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14676070] [2020-10-14 03:11:07,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:07,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:11:07,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262722239] [2020-10-14 03:11:07,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:07,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:07,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:07,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:07,290 INFO L87 Difference]: Start difference. First operand 13729 states and 18432 transitions. Second operand 5 states. [2020-10-14 03:11:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:28,688 INFO L93 Difference]: Finished difference Result 40591 states and 56245 transitions. [2020-10-14 03:11:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:28,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-14 03:11:28,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:28,837 INFO L225 Difference]: With dead ends: 40591 [2020-10-14 03:11:28,838 INFO L226 Difference]: Without dead ends: 26868 [2020-10-14 03:11:28,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:11:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26868 states. [2020-10-14 03:11:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26868 to 26858. [2020-10-14 03:11:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26858 states. [2020-10-14 03:11:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26858 states to 26858 states and 36069 transitions. [2020-10-14 03:11:30,813 INFO L78 Accepts]: Start accepts. Automaton has 26858 states and 36069 transitions. Word has length 131 [2020-10-14 03:11:30,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:30,813 INFO L479 AbstractCegarLoop]: Abstraction has 26858 states and 36069 transitions. [2020-10-14 03:11:30,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand 26858 states and 36069 transitions. [2020-10-14 03:11:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 03:11:30,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:30,818 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:11:30,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:11:30,819 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:30,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:30,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1275825311, now seen corresponding path program 1 times [2020-10-14 03:11:30,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:30,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514077784] [2020-10-14 03:11:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:32,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:32,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:11:32,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:11:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-14 03:11:32,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:32,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 03:11:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 03:11:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:32,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:32,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:32,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:32,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:32,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:11:32,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:32,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:32,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:32,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:32,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 03:11:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 03:11:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 03:11:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:32,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514077784] [2020-10-14 03:11:32,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:32,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:11:32,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824158529] [2020-10-14 03:11:32,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:11:32,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:32,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:11:32,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:11:32,641 INFO L87 Difference]: Start difference. First operand 26858 states and 36069 transitions. Second operand 6 states. [2020-10-14 03:12:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:05,117 INFO L93 Difference]: Finished difference Result 79992 states and 117507 transitions. [2020-10-14 03:12:05,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:12:05,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-10-14 03:12:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:05,404 INFO L225 Difference]: With dead ends: 79992 [2020-10-14 03:12:05,405 INFO L226 Difference]: Without dead ends: 53140 [2020-10-14 03:12:05,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:12:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53140 states. [2020-10-14 03:12:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53140 to 53093. [2020-10-14 03:12:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53093 states. [2020-10-14 03:12:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53093 states to 53093 states and 74028 transitions. [2020-10-14 03:12:06,939 INFO L78 Accepts]: Start accepts. Automaton has 53093 states and 74028 transitions. Word has length 159 [2020-10-14 03:12:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:06,939 INFO L479 AbstractCegarLoop]: Abstraction has 53093 states and 74028 transitions. [2020-10-14 03:12:06,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:12:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 53093 states and 74028 transitions. [2020-10-14 03:12:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 03:12:06,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:06,949 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:12:06,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:12:06,949 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:06,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1302331969, now seen corresponding path program 1 times [2020-10-14 03:12:06,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:06,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93162026] [2020-10-14 03:12:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:08,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:11,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:11,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 03:12:11,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:12:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4560 [2020-10-14 03:12:11,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:11,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:12:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 03:12:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:11,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:11,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:11,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:11,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:11,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:11,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:12:11,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:11,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:11,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:11,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:11,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:11,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:12:11,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 03:12:11,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:11,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:12:11,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 03:12:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:12,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:12,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:12:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 03:12:12,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:12,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:12:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 03:12:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:12:12,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93162026] [2020-10-14 03:12:12,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:12:12,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:12:12,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917667425] [2020-10-14 03:12:12,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:12:12,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:12,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:12:12,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:12:12,298 INFO L87 Difference]: Start difference. First operand 53093 states and 74028 transitions. Second operand 7 states. [2020-10-14 03:12:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:59,300 INFO L93 Difference]: Finished difference Result 152822 states and 223485 transitions. [2020-10-14 03:12:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:12:59,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-14 03:12:59,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:59,828 INFO L225 Difference]: With dead ends: 152822 [2020-10-14 03:12:59,828 INFO L226 Difference]: Without dead ends: 99735 [2020-10-14 03:12:59,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 03:13:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99735 states. [2020-10-14 03:13:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99735 to 84877. [2020-10-14 03:13:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84877 states. [2020-10-14 03:13:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84877 states to 84877 states and 116483 transitions. [2020-10-14 03:13:02,216 INFO L78 Accepts]: Start accepts. Automaton has 84877 states and 116483 transitions. Word has length 242 [2020-10-14 03:13:02,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:02,216 INFO L479 AbstractCegarLoop]: Abstraction has 84877 states and 116483 transitions. [2020-10-14 03:13:02,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:13:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand 84877 states and 116483 transitions. [2020-10-14 03:13:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 03:13:02,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:02,227 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 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 03:13:02,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:13:02,227 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:02,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2027069195, now seen corresponding path program 1 times [2020-10-14 03:13:02,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:02,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227142814] [2020-10-14 03:13:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:06,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:06,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 03:13:06,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:13:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4205 [2020-10-14 03:13:06,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:06,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 03:13:06,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:13:06,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:06,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:06,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:06,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:06,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:13:06,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:06,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:06,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:06,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:06,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:06,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:13:06,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:13:06,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:06,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:13:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:06,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 03:13:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:13:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:06,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:13:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 03:13:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking...