/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:18:39,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:18:39,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:18:40,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:18:40,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:18:40,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:18:40,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:18:40,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:18:40,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:18:40,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:18:40,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:18:40,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:18:40,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:18:40,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:18:40,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:18:40,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:18:40,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:18:40,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:18:40,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:18:40,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:18:40,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:18:40,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:18:40,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:18:40,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:18:40,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:18:40,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:18:40,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:18:40,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:18:40,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:18:40,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:18:40,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:18:40,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:18:40,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:18:40,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:18:40,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:18:40,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:18:40,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:18:40,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:18:40,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:18:40,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:18:40,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:18:40,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:18:40,115 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:18:40,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:18:40,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:18:40,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:18:40,117 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:18:40,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:18:40,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:18:40,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:18:40,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:18:40,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:18:40,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:18:40,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:18:40,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:18:40,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:18:40,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:18:40,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:18:40,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:18:40,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:18:40,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:18:40,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:18:40,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:18:40,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:18:40,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:18:40,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:18:40,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:18:40,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:18:40,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:18:40,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:18:40,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:18:40,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:18:40,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:18:40,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:18:40,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:18:40,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:18:40,448 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:18:40,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label07.c [2020-10-12 13:18:40,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f5b22a3c/ff7d334f55414654bb93573a81501522/FLAG93c0ea789 [2020-10-12 13:18:41,318 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:18:41,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label07.c [2020-10-12 13:18:41,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f5b22a3c/ff7d334f55414654bb93573a81501522/FLAG93c0ea789 [2020-10-12 13:18:41,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f5b22a3c/ff7d334f55414654bb93573a81501522 [2020-10-12 13:18:41,394 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:18:41,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:18:41,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:18:41,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:18:41,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:18:41,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:18:41" (1/1) ... [2020-10-12 13:18:41,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:41, skipping insertion in model container [2020-10-12 13:18:41,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:18:41" (1/1) ... [2020-10-12 13:18:41,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:18:41,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:18:43,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:18:43,092 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:18:43,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:18:43,787 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:18:43,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43 WrapperNode [2020-10-12 13:18:43,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:18:43,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:18:43,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:18:43,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:18:43,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (1/1) ... [2020-10-12 13:18:43,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (1/1) ... [2020-10-12 13:18:43,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (1/1) ... [2020-10-12 13:18:43,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (1/1) ... [2020-10-12 13:18:43,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (1/1) ... [2020-10-12 13:18:43,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (1/1) ... [2020-10-12 13:18:44,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (1/1) ... [2020-10-12 13:18:44,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:18:44,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:18:44,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:18:44,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:18:44,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:18:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:18:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:18:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:18:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:18:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:18:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:18:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:18:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:18:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:18:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:18:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:18:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:18:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:18:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:18:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:18:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:18:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:18:49,069 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:18:49,069 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:18:49,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:18:49 BoogieIcfgContainer [2020-10-12 13:18:49,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:18:49,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:18:49,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:18:49,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:18:49,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:18:41" (1/3) ... [2020-10-12 13:18:49,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b9a27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:18:49, skipping insertion in model container [2020-10-12 13:18:49,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:43" (2/3) ... [2020-10-12 13:18:49,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b9a27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:18:49, skipping insertion in model container [2020-10-12 13:18:49,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:18:49" (3/3) ... [2020-10-12 13:18:49,090 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label07.c [2020-10-12 13:18:49,102 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:18:49,111 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:18:49,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:18:49,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:18:49,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:18:49,155 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:18:49,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:18:49,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:18:49,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:18:49,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:18:49,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:18:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:18:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 13:18:49,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:49,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:18:49,215 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:49,222 INFO L82 PathProgramCache]: Analyzing trace with hash 336576653, now seen corresponding path program 1 times [2020-10-12 13:18:49,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:49,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140931894] [2020-10-12 13:18:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:49,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:49,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:49,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 13:18:49,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:49,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-12 13:18:49,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:18:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:18:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 13:18:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:18:49,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:49,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:49,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:49,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 13:18:49,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:18:49,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140931894] [2020-10-12 13:18:49,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:18:49,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:18:49,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470761959] [2020-10-12 13:18:49,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:18:49,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:49,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:18:49,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:18:49,799 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:18:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:58,423 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-12 13:18:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:18:58,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-12 13:18:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:58,460 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:18:58,460 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:18:58,474 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 [2020-10-12 13:18:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:18:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-12 13:18:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-12 13:18:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-12 13:18:58,645 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 12 [2020-10-12 13:18:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:58,646 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-12 13:18:58,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:18:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-12 13:18:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 13:18:58,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:58,651 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:18:58,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:18:58,652 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:58,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1239671147, now seen corresponding path program 1 times [2020-10-12 13:18:58,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:58,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124917409] [2020-10-12 13:18:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:59,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:59,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 13:18:59,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:18:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-12 13:18:59,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:59,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:18:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:18:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:18:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:18:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:59,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:59,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:59,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:59,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:18:59,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:59,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:59,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:18:59,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 13:18:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:18:59,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:18:59,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124917409] [2020-10-12 13:18:59,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:59,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:18:59,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844939485] [2020-10-12 13:18:59,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:18:59,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:59,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:18:59,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:18:59,763 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 6 states. [2020-10-12 13:19:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:09,770 INFO L93 Difference]: Finished difference Result 4689 states and 7282 transitions. [2020-10-12 13:19:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:19:09,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-12 13:19:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:09,791 INFO L225 Difference]: With dead ends: 4689 [2020-10-12 13:19:09,791 INFO L226 Difference]: Without dead ends: 3140 [2020-10-12 13:19:09,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:19:09,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-10-12 13:19:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3127. [2020-10-12 13:19:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-10-12 13:19:09,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4276 transitions. [2020-10-12 13:19:09,900 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4276 transitions. Word has length 87 [2020-10-12 13:19:09,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:09,901 INFO L479 AbstractCegarLoop]: Abstraction has 3127 states and 4276 transitions. [2020-10-12 13:19:09,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:19:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4276 transitions. [2020-10-12 13:19:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-12 13:19:09,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:09,939 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:19:09,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:19:09,940 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash -141866711, now seen corresponding path program 1 times [2020-10-12 13:19:09,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:09,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572336990] [2020-10-12 13:19:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:09,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:10,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:10,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:19:10,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-12 13:19:10,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:19:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:10,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:10,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:10,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:10,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:10,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:19:10,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:10,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:10,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:10,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:19:10,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:10,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 13:19:10,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:10,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 13:19:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:19:11,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572336990] [2020-10-12 13:19:11,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:19:11,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:19:11,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533055864] [2020-10-12 13:19:11,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:19:11,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:11,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:19:11,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:19:11,076 INFO L87 Difference]: Start difference. First operand 3127 states and 4276 transitions. Second operand 7 states. [2020-10-12 13:19:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:22,957 INFO L93 Difference]: Finished difference Result 9536 states and 13149 transitions. [2020-10-12 13:19:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:19:22,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-12 13:19:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:22,990 INFO L225 Difference]: With dead ends: 9536 [2020-10-12 13:19:22,990 INFO L226 Difference]: Without dead ends: 6415 [2020-10-12 13:19:23,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:19:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6415 states. [2020-10-12 13:19:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6415 to 6356. [2020-10-12 13:19:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6356 states. [2020-10-12 13:19:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 8111 transitions. [2020-10-12 13:19:23,183 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 8111 transitions. Word has length 93 [2020-10-12 13:19:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:23,184 INFO L479 AbstractCegarLoop]: Abstraction has 6356 states and 8111 transitions. [2020-10-12 13:19:23,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:19:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 8111 transitions. [2020-10-12 13:19:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 13:19:23,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:23,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:19:23,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:19:23,240 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:23,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1655967080, now seen corresponding path program 1 times [2020-10-12 13:19:23,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:23,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390281900] [2020-10-12 13:19:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:24,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:24,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 13:19:24,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1430 [2020-10-12 13:19:24,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:19:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:24,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:24,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:24,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:24,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:19:24,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:24,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:25,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:25,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:19:25,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-12 13:19:25,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:19:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:19:25,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390281900] [2020-10-12 13:19:25,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:19:25,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:19:25,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660235138] [2020-10-12 13:19:25,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:19:25,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:25,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:19:25,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:19:25,596 INFO L87 Difference]: Start difference. First operand 6356 states and 8111 transitions. Second operand 7 states. [2020-10-12 13:19:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:36,838 INFO L93 Difference]: Finished difference Result 9898 states and 13294 transitions. [2020-10-12 13:19:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:19:36,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-12 13:19:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:36,877 INFO L225 Difference]: With dead ends: 9898 [2020-10-12 13:19:36,877 INFO L226 Difference]: Without dead ends: 6672 [2020-10-12 13:19:36,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:19:36,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6672 states. [2020-10-12 13:19:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 6404. [2020-10-12 13:19:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6404 states. [2020-10-12 13:19:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 8177 transitions. [2020-10-12 13:19:37,165 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 8177 transitions. Word has length 160 [2020-10-12 13:19:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:37,167 INFO L479 AbstractCegarLoop]: Abstraction has 6404 states and 8177 transitions. [2020-10-12 13:19:37,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:19:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 8177 transitions. [2020-10-12 13:19:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-12 13:19:37,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:37,176 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:19:37,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:19:37,176 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:37,177 INFO L82 PathProgramCache]: Analyzing trace with hash 329470160, now seen corresponding path program 1 times [2020-10-12 13:19:37,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:37,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775589542] [2020-10-12 13:19:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:38,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-12 13:19:38,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:19:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-12 13:19:38,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:19:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:19:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:38,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:38,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:38,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:38,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:19:38,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:38,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:19:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:19:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:38,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:38,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:19:38,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:38,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 13:19:38,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:19:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:19:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:38,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:38,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:38,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:19:38,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:38,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 13:19:38,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:38,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:19:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 13:19:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:19:38,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775589542] [2020-10-12 13:19:38,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:19:38,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:19:38,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896192579] [2020-10-12 13:19:38,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:19:38,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:38,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:19:38,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:19:38,867 INFO L87 Difference]: Start difference. First operand 6404 states and 8177 transitions. Second operand 7 states. [2020-10-12 13:19:53,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:53,193 INFO L93 Difference]: Finished difference Result 12289 states and 16713 transitions. [2020-10-12 13:19:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:19:53,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-10-12 13:19:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:53,226 INFO L225 Difference]: With dead ends: 12289 [2020-10-12 13:19:53,226 INFO L226 Difference]: Without dead ends: 5889 [2020-10-12 13:19:53,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:19:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2020-10-12 13:19:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 5594. [2020-10-12 13:19:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5594 states. [2020-10-12 13:19:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 6999 transitions. [2020-10-12 13:19:53,391 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 6999 transitions. Word has length 187 [2020-10-12 13:19:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:53,392 INFO L479 AbstractCegarLoop]: Abstraction has 5594 states and 6999 transitions. [2020-10-12 13:19:53,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:19:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 6999 transitions. [2020-10-12 13:19:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-12 13:19:53,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:53,396 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:19:53,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:19:53,397 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:53,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:53,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1674801401, now seen corresponding path program 1 times [2020-10-12 13:19:53,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:53,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582470333] [2020-10-12 13:19:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:55,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:55,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 13:19:55,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:19:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1911 [2020-10-12 13:19:55,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:19:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 13:19:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:55,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:55,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:55,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:19:55,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:19:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:19:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:55,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:55,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:19:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 13:19:55,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:19:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:55,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:19:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:55,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:55,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:55,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:19:55,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:19:55,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:19:55,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 75 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:19:55,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582470333] [2020-10-12 13:19:55,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:19:55,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:19:55,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365896768] [2020-10-12 13:19:55,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:19:55,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:55,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:19:55,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:19:55,980 INFO L87 Difference]: Start difference. First operand 5594 states and 6999 transitions. Second operand 6 states. [2020-10-12 13:20:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:13,370 INFO L93 Difference]: Finished difference Result 15451 states and 20121 transitions. [2020-10-12 13:20:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:20:13,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2020-10-12 13:20:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:13,420 INFO L225 Difference]: With dead ends: 15451 [2020-10-12 13:20:13,420 INFO L226 Difference]: Without dead ends: 9790 [2020-10-12 13:20:13,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:20:13,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9790 states. [2020-10-12 13:20:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9790 to 9673. [2020-10-12 13:20:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9673 states. [2020-10-12 13:20:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9673 states to 9673 states and 11853 transitions. [2020-10-12 13:20:13,703 INFO L78 Accepts]: Start accepts. Automaton has 9673 states and 11853 transitions. Word has length 232 [2020-10-12 13:20:13,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:13,704 INFO L479 AbstractCegarLoop]: Abstraction has 9673 states and 11853 transitions. [2020-10-12 13:20:13,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:20:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9673 states and 11853 transitions. [2020-10-12 13:20:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-12 13:20:13,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:13,708 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:20:13,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:20:13,709 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:13,710 INFO L82 PathProgramCache]: Analyzing trace with hash -453196475, now seen corresponding path program 1 times [2020-10-12 13:20:13,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:13,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045357836] [2020-10-12 13:20:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:15,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:15,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-12 13:20:15,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:20:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1629 [2020-10-12 13:20:15,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:20:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:20:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 13:20:15,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:15,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:15,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:15,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:15,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:20:15,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:15,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:15,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:20:15,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 13:20:15,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:20:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:20:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:16,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:16,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:20:16,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:20:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 13:20:16,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:20:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:20:16,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045357836] [2020-10-12 13:20:16,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:16,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:20:16,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566756768] [2020-10-12 13:20:16,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:20:16,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:16,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:20:16,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:20:16,107 INFO L87 Difference]: Start difference. First operand 9673 states and 11853 transitions. Second operand 6 states. [2020-10-12 13:20:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:31,546 INFO L93 Difference]: Finished difference Result 27746 states and 35255 transitions. [2020-10-12 13:20:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:20:31,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-10-12 13:20:31,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:31,631 INFO L225 Difference]: With dead ends: 27746 [2020-10-12 13:20:31,632 INFO L226 Difference]: Without dead ends: 18009 [2020-10-12 13:20:31,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:20:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18009 states. [2020-10-12 13:20:32,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18009 to 17989. [2020-10-12 13:20:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17989 states. [2020-10-12 13:20:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17989 states to 17989 states and 22254 transitions. [2020-10-12 13:20:32,119 INFO L78 Accepts]: Start accepts. Automaton has 17989 states and 22254 transitions. Word has length 250 [2020-10-12 13:20:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:32,120 INFO L479 AbstractCegarLoop]: Abstraction has 17989 states and 22254 transitions. [2020-10-12 13:20:32,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:20:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 17989 states and 22254 transitions. [2020-10-12 13:20:32,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-12 13:20:32,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:32,125 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:20:32,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:20:32,125 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:32,126 INFO L82 PathProgramCache]: Analyzing trace with hash 738068880, now seen corresponding path program 1 times [2020-10-12 13:20:32,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:32,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952962683] [2020-10-12 13:20:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:32,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:33,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:33,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:33,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-12 13:20:33,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:20:33,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1208 [2020-10-12 13:20:33,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:20:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:20:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:20:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:33,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:33,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:20:33,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:33,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:33,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:33,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:33,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:33,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:20:33,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 13:20:33,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:33,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:20:33,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:20:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:33,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:20:34,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:20:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-12 13:20:34,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:20:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:20:34,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952962683] [2020-10-12 13:20:34,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:34,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:20:34,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138063345] [2020-10-12 13:20:34,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:20:34,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:34,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:20:34,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:20:34,408 INFO L87 Difference]: Start difference. First operand 17989 states and 22254 transitions. Second operand 6 states. [2020-10-12 13:20:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:51,191 INFO L93 Difference]: Finished difference Result 44096 states and 56276 transitions. [2020-10-12 13:20:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:20:51,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2020-10-12 13:20:51,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:51,282 INFO L225 Difference]: With dead ends: 44096 [2020-10-12 13:20:51,282 INFO L226 Difference]: Without dead ends: 26103 [2020-10-12 13:20:51,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:20:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26103 states. [2020-10-12 13:20:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26103 to 26035. [2020-10-12 13:20:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26035 states. [2020-10-12 13:20:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26035 states to 26035 states and 31849 transitions. [2020-10-12 13:20:51,821 INFO L78 Accepts]: Start accepts. Automaton has 26035 states and 31849 transitions. Word has length 251 [2020-10-12 13:20:51,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:51,822 INFO L479 AbstractCegarLoop]: Abstraction has 26035 states and 31849 transitions. [2020-10-12 13:20:51,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:20:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 26035 states and 31849 transitions. [2020-10-12 13:20:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-12 13:20:51,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:51,828 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-12 13:20:51,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:20:51,828 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1050993413, now seen corresponding path program 1 times [2020-10-12 13:20:51,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:51,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626502491] [2020-10-12 13:20:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:51,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:52,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:52,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-12 13:20:52,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:52,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-12 13:20:52,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-12 13:20:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 13:20:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:52,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:52,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:52,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:20:52,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:52,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:52,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:52,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:52,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:20:52,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 13:20:52,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:52,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:52,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:20:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:52,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:52,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:20:52,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 13:20:52,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:20:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 13:20:54,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626502491] [2020-10-12 13:20:54,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:54,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:20:54,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318793290] [2020-10-12 13:20:54,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:20:54,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:54,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:20:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:20:54,058 INFO L87 Difference]: Start difference. First operand 26035 states and 31849 transitions. Second operand 5 states. [2020-10-12 13:21:13,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:13,446 INFO L93 Difference]: Finished difference Result 60776 states and 78009 transitions. [2020-10-12 13:21:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:21:13,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-12 13:21:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:13,592 INFO L225 Difference]: With dead ends: 60776 [2020-10-12 13:21:13,593 INFO L226 Difference]: Without dead ends: 35514 [2020-10-12 13:21:13,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:21:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35514 states. [2020-10-12 13:21:14,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35514 to 35508. [2020-10-12 13:21:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35508 states. [2020-10-12 13:21:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35508 states to 35508 states and 43922 transitions. [2020-10-12 13:21:14,292 INFO L78 Accepts]: Start accepts. Automaton has 35508 states and 43922 transitions. Word has length 282 [2020-10-12 13:21:14,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:14,293 INFO L479 AbstractCegarLoop]: Abstraction has 35508 states and 43922 transitions. [2020-10-12 13:21:14,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:21:14,294 INFO L276 IsEmpty]: Start isEmpty. Operand 35508 states and 43922 transitions. [2020-10-12 13:21:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-12 13:21:14,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:14,301 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:21:14,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:21:14,302 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:14,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:14,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1829033708, now seen corresponding path program 1 times [2020-10-12 13:21:14,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:14,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767918461] [2020-10-12 13:21:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:14,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:14,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-12 13:21:14,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-12 13:21:14,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-12 13:21:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 13:21:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:15,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:15,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:15,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:21:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:15,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:15,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:21:15,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:15,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 13:21:15,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:15,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:21:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:15,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:15,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:21:15,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-12 13:21:15,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 13:21:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-12 13:21:15,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767918461] [2020-10-12 13:21:15,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:15,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:21:15,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675430029] [2020-10-12 13:21:15,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:21:15,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:15,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:21:15,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:21:15,964 INFO L87 Difference]: Start difference. First operand 35508 states and 43922 transitions. Second operand 5 states. [2020-10-12 13:21:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:35,235 INFO L93 Difference]: Finished difference Result 70245 states and 87551 transitions. [2020-10-12 13:21:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:21:35,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-12 13:21:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:35,349 INFO L225 Difference]: With dead ends: 70245 [2020-10-12 13:21:35,349 INFO L226 Difference]: Without dead ends: 35510 [2020-10-12 13:21:35,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:21:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35510 states. [2020-10-12 13:21:35,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35510 to 35465. [2020-10-12 13:21:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35465 states. [2020-10-12 13:21:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35465 states to 35465 states and 40631 transitions. [2020-10-12 13:21:36,035 INFO L78 Accepts]: Start accepts. Automaton has 35465 states and 40631 transitions. Word has length 297 [2020-10-12 13:21:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:36,036 INFO L479 AbstractCegarLoop]: Abstraction has 35465 states and 40631 transitions. [2020-10-12 13:21:36,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:21:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 35465 states and 40631 transitions. [2020-10-12 13:21:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-12 13:21:36,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:36,049 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:21:36,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:21:36,050 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:36,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2109985649, now seen corresponding path program 1 times [2020-10-12 13:21:36,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:36,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279978534] [2020-10-12 13:21:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:38,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:38,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-12 13:21:38,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:21:38,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2429 [2020-10-12 13:21:38,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-12 13:21:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:21:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:38,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:38,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:38,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:38,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:21:38,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:38,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:38,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:38,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:21:38,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:21:38,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:21:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:39,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:39,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:21:39,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 13:21:39,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:21:39,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-12 13:21:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:39,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:21:39,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 13:21:39,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:21:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-12 13:21:39,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279978534] [2020-10-12 13:21:39,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:39,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:21:39,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69815185] [2020-10-12 13:21:39,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:21:39,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:39,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:21:39,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:21:39,617 INFO L87 Difference]: Start difference. First operand 35465 states and 40631 transitions. Second operand 7 states. [2020-10-12 13:22:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:01,792 INFO L93 Difference]: Finished difference Result 102336 states and 120942 transitions. [2020-10-12 13:22:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:22:01,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 395 [2020-10-12 13:22:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:02,014 INFO L225 Difference]: With dead ends: 102336 [2020-10-12 13:22:02,014 INFO L226 Difference]: Without dead ends: 67644 [2020-10-12 13:22:02,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:22:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67644 states. [2020-10-12 13:22:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67644 to 64129. [2020-10-12 13:22:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64129 states. [2020-10-12 13:22:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64129 states to 64129 states and 72542 transitions. [2020-10-12 13:22:03,324 INFO L78 Accepts]: Start accepts. Automaton has 64129 states and 72542 transitions. Word has length 395 [2020-10-12 13:22:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:03,325 INFO L479 AbstractCegarLoop]: Abstraction has 64129 states and 72542 transitions. [2020-10-12 13:22:03,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:03,325 INFO L276 IsEmpty]: Start isEmpty. Operand 64129 states and 72542 transitions. [2020-10-12 13:22:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-12 13:22:03,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:03,342 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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] [2020-10-12 13:22:03,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:22:03,343 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:03,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:03,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1741663284, now seen corresponding path program 1 times [2020-10-12 13:22:03,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:03,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828100247] [2020-10-12 13:22:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:08,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-12 13:22:08,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:22:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-12 13:22:08,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:22:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-12 13:22:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-12 13:22:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:08,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:08,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:08,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:22:08,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:08,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:08,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:08,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:08,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:22:08,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 13:22:08,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:22:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:22:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:22:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:08,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:09,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:09,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:22:09,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 13:22:09,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:22:09,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-12 13:22:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:09,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:09,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 13:22:09,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 13:22:09,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 13:22:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:09,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-12 13:22:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:09,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:09,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:22:09,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 13:22:09,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:22:09,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 483 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 13:22:09,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828100247] [2020-10-12 13:22:09,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:09,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:22:09,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768585843] [2020-10-12 13:22:09,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:22:09,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:09,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:22:09,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:22:09,789 INFO L87 Difference]: Start difference. First operand 64129 states and 72542 transitions. Second operand 8 states.