/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/Problem13_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:38:08,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:38:08,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:38:08,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:38:08,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:38:08,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:38:08,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:38:08,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:38:08,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:38:08,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:38:08,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:38:08,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:38:08,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:38:08,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:38:08,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:38:08,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:38:08,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:38:08,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:38:08,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:38:08,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:38:08,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:38:08,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:38:08,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:38:08,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:38:08,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:38:08,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:38:08,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:38:08,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:38:08,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:38:08,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:38:08,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:38:08,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:38:08,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:38:08,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:38:08,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:38:08,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:38:08,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:38:08,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:38:08,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:38:08,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:38:08,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:38:08,224 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 13:38:08,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:38:08,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:38:08,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:38:08,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:38:08,251 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:38:08,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:38:08,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:38:08,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:38:08,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:38:08,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:38:08,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:38:08,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:38:08,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:38:08,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:38:08,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:38:08,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:38:08,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:38:08,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:38:08,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:38:08,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:38:08,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:38:08,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:38:08,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:38:08,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:38:08,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:38:08,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:38:08,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:38:08,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:38:08,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:38:08,257 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 13:38:08,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:38:08,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:38:08,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:38:08,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:38:08,593 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:38:08,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2020-10-12 13:38:08,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2152c18d1/5fd0cd196a2945128627b7e4b582abc8/FLAGaff10928b [2020-10-12 13:38:09,365 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:38:09,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2020-10-12 13:38:09,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2152c18d1/5fd0cd196a2945128627b7e4b582abc8/FLAGaff10928b [2020-10-12 13:38:09,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2152c18d1/5fd0cd196a2945128627b7e4b582abc8 [2020-10-12 13:38:09,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:38:09,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:38:09,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:38:09,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:38:09,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:38:09,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:38:09" (1/1) ... [2020-10-12 13:38:09,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e827995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:09, skipping insertion in model container [2020-10-12 13:38:09,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:38:09" (1/1) ... [2020-10-12 13:38:09,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:38:10,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:38:11,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:38:11,775 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:38:12,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:38:12,425 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:38:12,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12 WrapperNode [2020-10-12 13:38:12,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:38:12,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:38:12,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:38:12,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:38:12,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (1/1) ... [2020-10-12 13:38:12,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (1/1) ... [2020-10-12 13:38:12,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (1/1) ... [2020-10-12 13:38:12,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (1/1) ... [2020-10-12 13:38:12,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (1/1) ... [2020-10-12 13:38:12,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (1/1) ... [2020-10-12 13:38:12,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (1/1) ... [2020-10-12 13:38:12,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:38:12,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:38:12,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:38:12,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:38:12,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (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 13:38:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:38:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:38:12,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:38:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:38:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:38:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:38:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:38:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:38:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:38:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:38:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:38:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:38:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:38:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:38:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:38:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:38:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:38:24,032 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:38:24,033 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:38:24,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:38:24 BoogieIcfgContainer [2020-10-12 13:38:24,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:38:24,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:38:24,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:38:24,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:38:24,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:38:09" (1/3) ... [2020-10-12 13:38:24,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16677fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:38:24, skipping insertion in model container [2020-10-12 13:38:24,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:38:12" (2/3) ... [2020-10-12 13:38:24,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16677fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:38:24, skipping insertion in model container [2020-10-12 13:38:24,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:38:24" (3/3) ... [2020-10-12 13:38:24,061 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label21.c [2020-10-12 13:38:24,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:38:24,083 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:38:24,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:38:24,127 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:38:24,127 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:38:24,127 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:38:24,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:38:24,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:38:24,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:38:24,128 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:38:24,128 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:38:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:38:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 13:38:24,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:38:24,179 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] [2020-10-12 13:38:24,179 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:38:24,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:38:24,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1283196489, now seen corresponding path program 1 times [2020-10-12 13:38:24,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:38:24,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545791942] [2020-10-12 13:38:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:38:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:24,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:24,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 13:38:24,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 13:38:24,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:38:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:38:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 13:38:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:38:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:38:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:24,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:24,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:38:24,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:38:24,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:38:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:38:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:38:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:38:24,812 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 13:38:24,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545791942] [2020-10-12 13:38:24,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:38:24,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:38:24,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479889013] [2020-10-12 13:38:24,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:38:24,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:38:24,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:38:24,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:38:24,837 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-12 13:38:39,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:38:39,203 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-12 13:38:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:38:39,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-12 13:38:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:38:39,240 INFO L225 Difference]: With dead ends: 3152 [2020-10-12 13:38:39,241 INFO L226 Difference]: Without dead ends: 1954 [2020-10-12 13:38:39,255 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 13:38:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-12 13:38:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-12 13:38:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-12 13:38:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-12 13:38:39,462 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 26 [2020-10-12 13:38:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:38:39,463 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-12 13:38:39,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:38:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-12 13:38:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 13:38:39,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:38:39,472 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:38:39,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:38:39,473 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:38:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:38:39,474 INFO L82 PathProgramCache]: Analyzing trace with hash -568040722, now seen corresponding path program 1 times [2020-10-12 13:38:39,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:38:39,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575146715] [2020-10-12 13:38:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:38:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:40,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:38:40,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:38:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1215 [2020-10-12 13:38:40,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:38:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:38:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:38:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:38:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:38:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:40,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:40,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:38:40,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:38:40,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:38:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:38:40,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:38:40,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:38:40,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:38:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:41,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:38:41,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 13:38:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:38:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:38:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:38:41,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:38:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:38:41,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575146715] [2020-10-12 13:38:41,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:38:41,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:38:41,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038329117] [2020-10-12 13:38:41,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:38:41,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:38:41,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:38:41,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:38:41,146 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-12 13:39:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:39:02,321 INFO L93 Difference]: Finished difference Result 5683 states and 9339 transitions. [2020-10-12 13:39:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:39:02,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 13:39:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:39:02,345 INFO L225 Difference]: With dead ends: 5683 [2020-10-12 13:39:02,345 INFO L226 Difference]: Without dead ends: 3804 [2020-10-12 13:39:02,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:39:02,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2020-10-12 13:39:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 3710. [2020-10-12 13:39:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3710 states. [2020-10-12 13:39:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 5581 transitions. [2020-10-12 13:39:02,469 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 5581 transitions. Word has length 96 [2020-10-12 13:39:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:39:02,470 INFO L479 AbstractCegarLoop]: Abstraction has 3710 states and 5581 transitions. [2020-10-12 13:39:02,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:39:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 5581 transitions. [2020-10-12 13:39:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 13:39:02,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:39:02,474 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:39:02,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:39:02,474 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:39:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:39:02,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1172180461, now seen corresponding path program 1 times [2020-10-12 13:39:02,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:39:02,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171510465] [2020-10-12 13:39:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:39:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:02,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:03,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:03,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:39:03,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:39:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-12 13:39:03,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:39:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:39:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:39:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:39:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:03,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:39:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:39:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:39:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:39:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:39:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:03,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:39:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:03,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:39:03,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-12 13:39:03,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:39:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:39:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:39:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:39:03,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171510465] [2020-10-12 13:39:03,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:39:03,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:39:03,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919935790] [2020-10-12 13:39:03,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:39:03,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:39:03,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:39:03,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:39:03,911 INFO L87 Difference]: Start difference. First operand 3710 states and 5581 transitions. Second operand 7 states. [2020-10-12 13:39:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:39:26,582 INFO L93 Difference]: Finished difference Result 8463 states and 13132 transitions. [2020-10-12 13:39:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:39:26,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-12 13:39:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:39:26,613 INFO L225 Difference]: With dead ends: 8463 [2020-10-12 13:39:26,614 INFO L226 Difference]: Without dead ends: 4759 [2020-10-12 13:39:26,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:39:26,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2020-10-12 13:39:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 4552. [2020-10-12 13:39:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4552 states. [2020-10-12 13:39:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6191 transitions. [2020-10-12 13:39:26,777 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6191 transitions. Word has length 101 [2020-10-12 13:39:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:39:26,778 INFO L479 AbstractCegarLoop]: Abstraction has 4552 states and 6191 transitions. [2020-10-12 13:39:26,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:39:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6191 transitions. [2020-10-12 13:39:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 13:39:26,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:39:26,785 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:39:26,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:39:26,786 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:39:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:39:26,786 INFO L82 PathProgramCache]: Analyzing trace with hash -267890033, now seen corresponding path program 1 times [2020-10-12 13:39:26,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:39:26,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32632546] [2020-10-12 13:39:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:39:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:27,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:27,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:27,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 13:39:27,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:39:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-12 13:39:27,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:39:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:39:27,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:39:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:27,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:39:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:27,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:27,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:39:27,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:39:27,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:39:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:39:27,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:39:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:39:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:27,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:28,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:39:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 13:39:28,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:39:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:39:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:39:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:39:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:39:28,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32632546] [2020-10-12 13:39:28,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:39:28,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:39:28,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083414191] [2020-10-12 13:39:28,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:39:28,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:39:28,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:39:28,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:39:28,158 INFO L87 Difference]: Start difference. First operand 4552 states and 6191 transitions. Second operand 8 states. [2020-10-12 13:39:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:39:53,059 INFO L93 Difference]: Finished difference Result 15438 states and 22188 transitions. [2020-10-12 13:39:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:39:53,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-12 13:39:53,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:39:53,116 INFO L225 Difference]: With dead ends: 15438 [2020-10-12 13:39:53,116 INFO L226 Difference]: Without dead ends: 10892 [2020-10-12 13:39:53,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:39:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10892 states. [2020-10-12 13:39:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10892 to 10730. [2020-10-12 13:39:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10730 states. [2020-10-12 13:39:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10730 states to 10730 states and 14285 transitions. [2020-10-12 13:39:53,423 INFO L78 Accepts]: Start accepts. Automaton has 10730 states and 14285 transitions. Word has length 103 [2020-10-12 13:39:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:39:53,424 INFO L479 AbstractCegarLoop]: Abstraction has 10730 states and 14285 transitions. [2020-10-12 13:39:53,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:39:53,424 INFO L276 IsEmpty]: Start isEmpty. Operand 10730 states and 14285 transitions. [2020-10-12 13:39:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 13:39:53,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:39:53,427 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:39:53,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:39:53,428 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:39:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:39:53,428 INFO L82 PathProgramCache]: Analyzing trace with hash 668051264, now seen corresponding path program 1 times [2020-10-12 13:39:53,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:39:53,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588665414] [2020-10-12 13:39:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:39:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:53,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:53,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 13:39:53,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-12 13:39:53,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:39:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:39:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 13:39:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:53,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:39:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:53,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:53,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:39:53,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:39:53,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:39:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:39:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:39:53,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:39:53,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:39:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:54,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:39:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:39:54,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:39:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:39:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:39:54,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:39:54,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588665414] [2020-10-12 13:39:54,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:39:54,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:39:54,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246069090] [2020-10-12 13:39:54,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:39:54,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:39:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:39:54,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:39:54,148 INFO L87 Difference]: Start difference. First operand 10730 states and 14285 transitions. Second operand 5 states. [2020-10-12 13:40:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:40:11,695 INFO L93 Difference]: Finished difference Result 23188 states and 32413 transitions. [2020-10-12 13:40:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:40:11,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 13:40:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:40:11,756 INFO L225 Difference]: With dead ends: 23188 [2020-10-12 13:40:11,756 INFO L226 Difference]: Without dead ends: 13267 [2020-10-12 13:40:11,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:40:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13267 states. [2020-10-12 13:40:12,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13267 to 13158. [2020-10-12 13:40:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13158 states. [2020-10-12 13:40:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13158 states to 13158 states and 17460 transitions. [2020-10-12 13:40:12,088 INFO L78 Accepts]: Start accepts. Automaton has 13158 states and 17460 transitions. Word has length 155 [2020-10-12 13:40:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:40:12,090 INFO L479 AbstractCegarLoop]: Abstraction has 13158 states and 17460 transitions. [2020-10-12 13:40:12,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:40:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 13158 states and 17460 transitions. [2020-10-12 13:40:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 13:40:12,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:40:12,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:40:12,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:40:12,094 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:40:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:40:12,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1545352809, now seen corresponding path program 1 times [2020-10-12 13:40:12,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:40:12,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041978357] [2020-10-12 13:40:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:40:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:12,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:15,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-12 13:40:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:40:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3021 [2020-10-12 13:40:15,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:40:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-12 13:40:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:40:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:40:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:15,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:15,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:40:15,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:15,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:40:15,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:40:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:40:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:40:15,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:40:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:15,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:15,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:40:15,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 13:40:15,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:40:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:40:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 13:40:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:15,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:40:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:15,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:15,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:40:15,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:40:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 13:40:15,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:40:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:40:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:40:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 91 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:40:15,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041978357] [2020-10-12 13:40:15,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:40:15,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:40:15,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434948450] [2020-10-12 13:40:15,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:40:15,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:40:15,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:40:15,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:40:15,759 INFO L87 Difference]: Start difference. First operand 13158 states and 17460 transitions. Second operand 7 states. [2020-10-12 13:40:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:40:43,942 INFO L93 Difference]: Finished difference Result 30890 states and 42717 transitions. [2020-10-12 13:40:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:40:43,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-12 13:40:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:40:44,012 INFO L225 Difference]: With dead ends: 30890 [2020-10-12 13:40:44,013 INFO L226 Difference]: Without dead ends: 18541 [2020-10-12 13:40:44,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:40:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18541 states. [2020-10-12 13:40:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18541 to 18344. [2020-10-12 13:40:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18344 states. [2020-10-12 13:40:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18344 states to 18344 states and 23758 transitions. [2020-10-12 13:40:44,413 INFO L78 Accepts]: Start accepts. Automaton has 18344 states and 23758 transitions. Word has length 196 [2020-10-12 13:40:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:40:44,414 INFO L479 AbstractCegarLoop]: Abstraction has 18344 states and 23758 transitions. [2020-10-12 13:40:44,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:40:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 18344 states and 23758 transitions. [2020-10-12 13:40:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-12 13:40:44,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:40:44,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:40:44,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:40:44,418 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:40:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:40:44,418 INFO L82 PathProgramCache]: Analyzing trace with hash -688675368, now seen corresponding path program 1 times [2020-10-12 13:40:44,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:40:44,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032589978] [2020-10-12 13:40:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:40:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:44,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 13:40:48,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:40:48,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4011 [2020-10-12 13:40:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:40:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:40:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 13:40:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:40:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:48,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:48,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:40:48,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:40:48,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:40:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:40:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:40:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:48,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:40:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:48,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:48,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:40:48,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:48,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 13:40:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:40:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:40:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:40:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:40:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:48,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:49,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:49,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:40:49,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:49,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 13:40:49,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:40:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 13:40:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:40:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 38 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:40:49,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032589978] [2020-10-12 13:40:49,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:40:49,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:40:49,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114974367] [2020-10-12 13:40:49,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:40:49,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:40:49,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:40:49,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:40:49,117 INFO L87 Difference]: Start difference. First operand 18344 states and 23758 transitions. Second operand 7 states. [2020-10-12 13:41:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:41:11,283 INFO L93 Difference]: Finished difference Result 36594 states and 48236 transitions. [2020-10-12 13:41:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:41:11,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-12 13:41:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:41:11,369 INFO L225 Difference]: With dead ends: 36594 [2020-10-12 13:41:11,369 INFO L226 Difference]: Without dead ends: 19065 [2020-10-12 13:41:11,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:41:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19065 states. [2020-10-12 13:41:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19065 to 18554. [2020-10-12 13:41:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18554 states. [2020-10-12 13:41:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18554 states to 18554 states and 24314 transitions. [2020-10-12 13:41:11,761 INFO L78 Accepts]: Start accepts. Automaton has 18554 states and 24314 transitions. Word has length 205 [2020-10-12 13:41:11,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:41:11,761 INFO L479 AbstractCegarLoop]: Abstraction has 18554 states and 24314 transitions. [2020-10-12 13:41:11,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:41:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 18554 states and 24314 transitions. [2020-10-12 13:41:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 13:41:11,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:41:11,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:41:11,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:41:11,765 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:41:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:41:11,766 INFO L82 PathProgramCache]: Analyzing trace with hash 234199782, now seen corresponding path program 1 times [2020-10-12 13:41:11,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:41:11,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819597053] [2020-10-12 13:41:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:41:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:12,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:12,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 13:41:12,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:41:12,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-12 13:41:12,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:41:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 13:41:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 13:41:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:12,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:41:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:12,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:41:12,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:41:12,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:41:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:41:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:12,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:41:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:12,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:12,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:41:12,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:41:12,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:41:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:41:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:41:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:13,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:13,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:41:13,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:41:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-12 13:41:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:41:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:41:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:41:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:41:13,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819597053] [2020-10-12 13:41:13,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:41:13,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:41:13,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202388838] [2020-10-12 13:41:13,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:41:13,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:41:13,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:41:13,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:41:13,497 INFO L87 Difference]: Start difference. First operand 18554 states and 24314 transitions. Second operand 7 states. [2020-10-12 13:41:44,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:41:44,997 INFO L93 Difference]: Finished difference Result 49317 states and 70996 transitions. [2020-10-12 13:41:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:41:45,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-12 13:41:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:41:45,104 INFO L225 Difference]: With dead ends: 49317 [2020-10-12 13:41:45,104 INFO L226 Difference]: Without dead ends: 31583 [2020-10-12 13:41:45,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:41:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31583 states. [2020-10-12 13:41:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31583 to 30816. [2020-10-12 13:41:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30816 states. [2020-10-12 13:41:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30816 states to 30816 states and 40888 transitions. [2020-10-12 13:41:45,747 INFO L78 Accepts]: Start accepts. Automaton has 30816 states and 40888 transitions. Word has length 212 [2020-10-12 13:41:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:41:45,748 INFO L479 AbstractCegarLoop]: Abstraction has 30816 states and 40888 transitions. [2020-10-12 13:41:45,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:41:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 30816 states and 40888 transitions. [2020-10-12 13:41:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-12 13:41:45,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:41:45,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:41:45,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:41:45,755 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:41:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:41:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1564933277, now seen corresponding path program 1 times [2020-10-12 13:41:45,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:41:45,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531780626] [2020-10-12 13:41:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:41:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:46,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:46,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:47,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:48,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:48,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-12 13:41:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:41:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3064 [2020-10-12 13:41:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:41:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:41:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-12 13:41:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:41:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:49,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:49,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:41:49,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:49,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:41:49,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:49,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:41:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:41:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:41:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:49,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:41:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:41:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-12 13:41:49,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:41:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:41:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:41:49,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:41:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:49,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:49,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:49,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 13:41:49,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 13:41:49,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:41:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:41:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 13:41:49,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 13:41:50,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531780626] [2020-10-12 13:41:50,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:41:50,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:41:50,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214482608] [2020-10-12 13:41:50,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:41:50,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:41:50,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:41:50,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:41:50,027 INFO L87 Difference]: Start difference. First operand 30816 states and 40888 transitions. Second operand 8 states.