/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=NARROWEST --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/Problem05_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:46:11,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:46:11,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:46:11,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:46:11,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:46:11,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:46:11,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:46:11,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:46:11,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:46:11,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:46:11,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:46:11,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:46:11,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:46:11,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:46:11,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:46:11,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:46:11,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:46:11,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:46:11,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:46:11,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:46:11,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:46:11,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:46:11,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:46:11,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:46:11,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:46:11,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:46:11,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:46:11,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:46:11,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:46:11,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:46:11,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:46:11,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:46:11,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:46:11,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:46:11,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:46:11,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:46:11,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:46:11,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:46:11,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:46:11,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:46:11,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:46:11,143 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 [2020-10-13 06:46:11,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:46:11,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:46:11,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:46:11,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:46:11,167 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:46:11,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:46:11,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:46:11,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:46:11,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:46:11,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:46:11,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:46:11,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:46:11,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:46:11,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:46:11,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:46:11,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:46:11,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:46:11,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:46:11,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:46:11,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:46:11,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:46:11,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:46:11,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:46:11,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:46:11,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:46:11,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:46:11,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:46:11,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:46:11,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:46:11,172 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:46:11,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:46:11,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:46:11,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:46:11,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:46:11,502 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:46:11,503 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label06.c [2020-10-13 06:46:11,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1133f557/ce98f98d448d49d686e60940e6ab5935/FLAG8c5252684 [2020-10-13 06:46:12,528 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:46:12,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label06.c [2020-10-13 06:46:12,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1133f557/ce98f98d448d49d686e60940e6ab5935/FLAG8c5252684 [2020-10-13 06:46:12,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1133f557/ce98f98d448d49d686e60940e6ab5935 [2020-10-13 06:46:12,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:46:12,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:46:12,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:46:12,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:46:12,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:46:12,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:46:12" (1/1) ... [2020-10-13 06:46:12,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd15f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:12, skipping insertion in model container [2020-10-13 06:46:12,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:46:12" (1/1) ... [2020-10-13 06:46:12,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:46:13,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:46:15,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:46:15,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:46:16,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:46:16,932 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:46:16,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16 WrapperNode [2020-10-13 06:46:16,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:46:16,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:46:16,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:46:16,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:46:16,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (1/1) ... [2020-10-13 06:46:16,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (1/1) ... [2020-10-13 06:46:17,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (1/1) ... [2020-10-13 06:46:17,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (1/1) ... [2020-10-13 06:46:17,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (1/1) ... [2020-10-13 06:46:17,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (1/1) ... [2020-10-13 06:46:17,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (1/1) ... [2020-10-13 06:46:17,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:46:17,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:46:17,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:46:17,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:46:17,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (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 [2020-10-13 06:46:17,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:46:17,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:46:17,609 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:46:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:46:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:46:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:46:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:46:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 06:46:17,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-13 06:46:17,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-13 06:46:17,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:46:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:46:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:46:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:46:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:46:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:46:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 06:46:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-13 06:46:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-13 06:46:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:46:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:46:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:46:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:46:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:46:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:46:25,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:46:25,998 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:46:26,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:46:26 BoogieIcfgContainer [2020-10-13 06:46:26,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:46:26,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:46:26,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:46:26,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:46:26,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:46:12" (1/3) ... [2020-10-13 06:46:26,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f7e321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:46:26, skipping insertion in model container [2020-10-13 06:46:26,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:16" (2/3) ... [2020-10-13 06:46:26,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f7e321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:46:26, skipping insertion in model container [2020-10-13 06:46:26,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:46:26" (3/3) ... [2020-10-13 06:46:26,031 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label06.c [2020-10-13 06:46:26,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:46:26,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:46:26,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:46:26,105 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:46:26,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:46:26,106 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:46:26,106 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:46:26,106 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:46:26,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:46:26,106 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:46:26,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:46:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-13 06:46:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2020-10-13 06:46:26,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:46:26,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:46:26,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:46:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:46:26,292 INFO L82 PathProgramCache]: Analyzing trace with hash 309099633, now seen corresponding path program 1 times [2020-10-13 06:46:26,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:46:26,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468493382] [2020-10-13 06:46:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:46:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:32,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1712 [2020-10-13 06:46:32,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-13 06:46:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:46:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:46:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1706 [2020-10-13 06:46:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:46:34,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:46:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:46:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:46:34,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:46:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:46:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:46:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:46:34,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:46:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:46:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:46:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:46:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:46:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:46:36,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468493382] [2020-10-13 06:46:36,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:46:36,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 06:46:36,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54430861] [2020-10-13 06:46:36,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:46:36,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:46:36,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:46:36,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:46:36,928 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-13 06:47:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:47:00,734 INFO L93 Difference]: Finished difference Result 8124 states and 15411 transitions. [2020-10-13 06:47:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:47:00,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1690 [2020-10-13 06:47:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:47:00,795 INFO L225 Difference]: With dead ends: 8124 [2020-10-13 06:47:00,795 INFO L226 Difference]: Without dead ends: 5834 [2020-10-13 06:47:00,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:47:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2020-10-13 06:47:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5801. [2020-10-13 06:47:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-13 06:47:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9374 transitions. [2020-10-13 06:47:01,120 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9374 transitions. Word has length 1690 [2020-10-13 06:47:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:47:01,126 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9374 transitions. [2020-10-13 06:47:01,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:47:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9374 transitions. [2020-10-13 06:47:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2020-10-13 06:47:01,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:47:01,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:47:01,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:47:01,243 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:47:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:47:01,245 INFO L82 PathProgramCache]: Analyzing trace with hash -782889754, now seen corresponding path program 1 times [2020-10-13 06:47:01,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:47:01,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951583211] [2020-10-13 06:47:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:47:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:06,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:06,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1723 [2020-10-13 06:47:06,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:47:06,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-13 06:47:06,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:47:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:47:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:47:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:47:06,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:47:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:07,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:07,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:07,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:47:07,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:07,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:47:07,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:07,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:47:07,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:07,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:47:07,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:47:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:07,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:07,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:47:07,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:47:07,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:47:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:47:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:47:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:47:08,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951583211] [2020-10-13 06:47:08,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:47:08,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:47:08,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935705092] [2020-10-13 06:47:08,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:47:08,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:47:08,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:47:08,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:47:08,151 INFO L87 Difference]: Start difference. First operand 5801 states and 9374 transitions. Second operand 8 states. [2020-10-13 06:47:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:47:38,971 INFO L93 Difference]: Finished difference Result 22660 states and 37795 transitions. [2020-10-13 06:47:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:47:38,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1699 [2020-10-13 06:47:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:47:39,066 INFO L225 Difference]: With dead ends: 22660 [2020-10-13 06:47:39,066 INFO L226 Difference]: Without dead ends: 16865 [2020-10-13 06:47:39,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:47:39,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16865 states. [2020-10-13 06:47:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16865 to 16671. [2020-10-13 06:47:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16671 states. [2020-10-13 06:47:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16671 states to 16671 states and 26104 transitions. [2020-10-13 06:47:39,752 INFO L78 Accepts]: Start accepts. Automaton has 16671 states and 26104 transitions. Word has length 1699 [2020-10-13 06:47:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:47:39,753 INFO L479 AbstractCegarLoop]: Abstraction has 16671 states and 26104 transitions. [2020-10-13 06:47:39,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:47:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 16671 states and 26104 transitions. [2020-10-13 06:47:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2020-10-13 06:47:39,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:47:39,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:47:39,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:47:39,835 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:47:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:47:39,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1269568642, now seen corresponding path program 1 times [2020-10-13 06:47:39,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:47:39,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553149196] [2020-10-13 06:47:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:47:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:40,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:40,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:45,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:45,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1739 [2020-10-13 06:47:45,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:47:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-13 06:47:45,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:47:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:47:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:47:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:47:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:46,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:46,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:46,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:47:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:47:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:47:46,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:47:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:47:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:46,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:46,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:47:46,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:47:46,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:47:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:47:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:46,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:47:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:46,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:46,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 06:47:46,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:47:46,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:47:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:47:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 06:47:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:47:47,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553149196] [2020-10-13 06:47:47,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:47:47,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:47:47,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558105892] [2020-10-13 06:47:47,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:47:47,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:47:47,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:47:47,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:47:47,488 INFO L87 Difference]: Start difference. First operand 16671 states and 26104 transitions. Second operand 7 states. [2020-10-13 06:48:13,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:48:13,618 INFO L93 Difference]: Finished difference Result 37530 states and 59838 transitions. [2020-10-13 06:48:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:48:13,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1713 [2020-10-13 06:48:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:48:13,695 INFO L225 Difference]: With dead ends: 37530 [2020-10-13 06:48:13,696 INFO L226 Difference]: Without dead ends: 20865 [2020-10-13 06:48:13,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:48:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20865 states. [2020-10-13 06:48:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20865 to 18930. [2020-10-13 06:48:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18930 states. [2020-10-13 06:48:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18930 states to 18930 states and 25876 transitions. [2020-10-13 06:48:14,212 INFO L78 Accepts]: Start accepts. Automaton has 18930 states and 25876 transitions. Word has length 1713 [2020-10-13 06:48:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:48:14,214 INFO L479 AbstractCegarLoop]: Abstraction has 18930 states and 25876 transitions. [2020-10-13 06:48:14,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:48:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 18930 states and 25876 transitions. [2020-10-13 06:48:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1729 [2020-10-13 06:48:14,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:48:14,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:48:14,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:48:14,320 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:48:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:48:14,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1514093365, now seen corresponding path program 1 times [2020-10-13 06:48:14,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:48:14,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581161246] [2020-10-13 06:48:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:48:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:19,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:19,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1752 [2020-10-13 06:48:19,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:48:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:48:19,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:48:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:48:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 06:48:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:48:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:19,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:48:19,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:48:19,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:48:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:48:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:48:19,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:48:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:48:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:20,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:20,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:48:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:48:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 06:48:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:48:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:48:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:48:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:48:21,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581161246] [2020-10-13 06:48:21,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:48:21,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:48:21,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406381058] [2020-10-13 06:48:21,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:48:21,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:48:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:48:21,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:48:21,351 INFO L87 Difference]: Start difference. First operand 18930 states and 25876 transitions. Second operand 8 states. [2020-10-13 06:48:55,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:48:55,427 INFO L93 Difference]: Finished difference Result 71892 states and 108312 transitions. [2020-10-13 06:48:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:48:55,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1728 [2020-10-13 06:48:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:48:55,602 INFO L225 Difference]: With dead ends: 71892 [2020-10-13 06:48:55,602 INFO L226 Difference]: Without dead ends: 52968 [2020-10-13 06:48:55,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:48:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52968 states. [2020-10-13 06:48:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52968 to 52919. [2020-10-13 06:48:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52919 states. [2020-10-13 06:48:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52919 states to 52919 states and 74735 transitions. [2020-10-13 06:48:56,894 INFO L78 Accepts]: Start accepts. Automaton has 52919 states and 74735 transitions. Word has length 1728 [2020-10-13 06:48:56,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:48:56,894 INFO L479 AbstractCegarLoop]: Abstraction has 52919 states and 74735 transitions. [2020-10-13 06:48:56,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:48:56,895 INFO L276 IsEmpty]: Start isEmpty. Operand 52919 states and 74735 transitions. [2020-10-13 06:48:57,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1752 [2020-10-13 06:48:57,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:48:57,057 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:48:57,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:48:57,058 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:48:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:48:57,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1844334952, now seen corresponding path program 1 times [2020-10-13 06:48:57,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:48:57,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076870306] [2020-10-13 06:48:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:48:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:57,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:02,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1777 [2020-10-13 06:49:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:49:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-13 06:49:02,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:49:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 06:49:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 06:49:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:02,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:49:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:02,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:02,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:49:02,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:02,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:49:02,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:49:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:49:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:49:02,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:02,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:49:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:02,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 06:49:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:49:02,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:49:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:49:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:49:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 06:49:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:02,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:02,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:49:02,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:02,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:49:02,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:49:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:49:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 06:49:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:49:04,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076870306] [2020-10-13 06:49:04,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:49:04,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:49:04,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868683441] [2020-10-13 06:49:04,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:49:04,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:49:04,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:49:04,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:49:04,357 INFO L87 Difference]: Start difference. First operand 52919 states and 74735 transitions. Second operand 7 states. [2020-10-13 06:49:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:49:29,197 INFO L93 Difference]: Finished difference Result 158457 states and 249371 transitions. [2020-10-13 06:49:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:49:29,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1751 [2020-10-13 06:49:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:49:29,666 INFO L225 Difference]: With dead ends: 158457 [2020-10-13 06:49:29,666 INFO L226 Difference]: Without dead ends: 105544 [2020-10-13 06:49:29,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:49:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105544 states. [2020-10-13 06:49:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105544 to 104930. [2020-10-13 06:49:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104930 states. [2020-10-13 06:49:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104930 states to 104930 states and 156805 transitions. [2020-10-13 06:49:32,268 INFO L78 Accepts]: Start accepts. Automaton has 104930 states and 156805 transitions. Word has length 1751 [2020-10-13 06:49:32,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:49:32,268 INFO L479 AbstractCegarLoop]: Abstraction has 104930 states and 156805 transitions. [2020-10-13 06:49:32,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:49:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 104930 states and 156805 transitions. [2020-10-13 06:49:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1753 [2020-10-13 06:49:32,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:49:32,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:49:32,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:49:32,549 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:49:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:49:32,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1069890400, now seen corresponding path program 1 times [2020-10-13 06:49:32,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:49:32,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918996523] [2020-10-13 06:49:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:49:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:32,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:32,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:37,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:37,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1778 [2020-10-13 06:49:37,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:49:37,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 06:49:37,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:49:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 06:49:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 06:49:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:38,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:49:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:38,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:38,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:49:38,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:49:38,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:49:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:49:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:49:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:49:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:38,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:38,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:49:38,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:49:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:49:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:49:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 06:49:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 06:49:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:38,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:38,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:49:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:49:38,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:49:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:49:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 06:49:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:49:39,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918996523] [2020-10-13 06:49:39,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:49:39,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:49:39,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619593347] [2020-10-13 06:49:39,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:49:39,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:49:39,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:49:39,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:49:39,443 INFO L87 Difference]: Start difference. First operand 104930 states and 156805 transitions. Second operand 7 states.