/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:26:45,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:26:45,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:26:45,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:26:45,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:26:45,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:26:45,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:26:45,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:26:45,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:26:45,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:26:45,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:26:45,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:26:45,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:26:45,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:26:45,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:26:45,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:26:45,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:26:45,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:26:45,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:26:45,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:26:45,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:26:45,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:26:45,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:26:45,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:26:45,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:26:45,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:26:45,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:26:45,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:26:45,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:26:45,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:26:45,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:26:45,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:26:45,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:26:45,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:26:45,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:26:45,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:26:45,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:26:45,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:26:45,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:26:45,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:26:45,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:26:45,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:26:45,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:26:45,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:26:45,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:26:45,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:26:45,647 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:26:45,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:26:45,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:26:45,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:26:45,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:26:45,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:26:45,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:26:45,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:26:45,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:26:45,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:26:45,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:26:45,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:26:45,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:26:45,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:26:45,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:26:45,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:26:45,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:26:45,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:26:45,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:26:45,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:26:45,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:26:45,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:26:45,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:26:45,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:26:45,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:26:45,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:26:45,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:26:45,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:26:45,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:26:45,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:26:45,984 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:26:45,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label53.c [2020-10-13 08:26:46,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d625fdeb/0a47628b41fa41e38db55fa87ee71ce2/FLAGf086e8e7f [2020-10-13 08:26:46,889 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:26:46,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label53.c [2020-10-13 08:26:46,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d625fdeb/0a47628b41fa41e38db55fa87ee71ce2/FLAGf086e8e7f [2020-10-13 08:26:47,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d625fdeb/0a47628b41fa41e38db55fa87ee71ce2 [2020-10-13 08:26:47,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:26:47,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:26:47,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:26:47,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:26:47,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:26:47,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:26:47" (1/1) ... [2020-10-13 08:26:47,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef7a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:47, skipping insertion in model container [2020-10-13 08:26:47,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:26:47" (1/1) ... [2020-10-13 08:26:47,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:26:47,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:26:49,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:26:49,217 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:26:49,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:26:49,958 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:26:49,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49 WrapperNode [2020-10-13 08:26:49,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:26:49,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:26:49,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:26:49,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:26:49,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (1/1) ... [2020-10-13 08:26:49,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (1/1) ... [2020-10-13 08:26:50,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (1/1) ... [2020-10-13 08:26:50,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (1/1) ... [2020-10-13 08:26:50,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (1/1) ... [2020-10-13 08:26:50,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (1/1) ... [2020-10-13 08:26:50,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (1/1) ... [2020-10-13 08:26:50,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:26:50,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:26:50,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:26:50,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:26:50,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:26:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:26:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:26:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:26:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:26:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:26:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:26:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:26:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:26:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:26:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:26:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:26:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:26:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:26:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:26:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:26:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:26:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:26:56,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:26:56,008 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:26:56,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:26:56 BoogieIcfgContainer [2020-10-13 08:26:56,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:26:56,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:26:56,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:26:56,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:26:56,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:26:47" (1/3) ... [2020-10-13 08:26:56,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2467bea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:26:56, skipping insertion in model container [2020-10-13 08:26:56,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:49" (2/3) ... [2020-10-13 08:26:56,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2467bea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:26:56, skipping insertion in model container [2020-10-13 08:26:56,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:26:56" (3/3) ... [2020-10-13 08:26:56,046 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label53.c [2020-10-13 08:26:56,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:26:56,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:26:56,083 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:26:56,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:26:56,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:26:56,118 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:26:56,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:26:56,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:26:56,118 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:26:56,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:26:56,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:26:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:26:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 08:26:56,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:56,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:56,178 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:56,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1583493141, now seen corresponding path program 1 times [2020-10-13 08:26:56,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:56,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039313384] [2020-10-13 08:26:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:56,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:56,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 08:26:56,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-13 08:26:56,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:26:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:26:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:26:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:26:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:56,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:56,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:56,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:26:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:26:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:26:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:56,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039313384] [2020-10-13 08:26:57,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:26:57,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:26:57,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821711881] [2020-10-13 08:26:57,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:26:57,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:57,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:26:57,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:26:57,027 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:27:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:06,735 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:27:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:06,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 08:27:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:06,788 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:27:06,788 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:27:06,799 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 [2020-10-13 08:27:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:27:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:27:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:27:06,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-13 08:27:06,971 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 38 [2020-10-13 08:27:06,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:06,974 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-13 08:27:06,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:27:06,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-13 08:27:06,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 08:27:06,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:06,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:06,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:27:06,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:06,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1077610455, now seen corresponding path program 1 times [2020-10-13 08:27:06,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:06,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635818970] [2020-10-13 08:27:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:08,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:27:08,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-10-13 08:27:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:27:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:27:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:08,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:08,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:08,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:08,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:08,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:27:08,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:08,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:08,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:08,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:08,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:27:08,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:27:08,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:08,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:27:08,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:08,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635818970] [2020-10-13 08:27:08,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:08,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:08,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107941202] [2020-10-13 08:27:08,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:08,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:08,526 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-13 08:27:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:21,465 INFO L93 Difference]: Finished difference Result 4675 states and 8270 transitions. [2020-10-13 08:27:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:21,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 08:27:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:21,497 INFO L225 Difference]: With dead ends: 4675 [2020-10-13 08:27:21,497 INFO L226 Difference]: Without dead ends: 3128 [2020-10-13 08:27:21,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-13 08:27:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3111. [2020-10-13 08:27:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-13 08:27:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4905 transitions. [2020-10-13 08:27:21,681 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4905 transitions. Word has length 107 [2020-10-13 08:27:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:21,682 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4905 transitions. [2020-10-13 08:27:21,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4905 transitions. [2020-10-13 08:27:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 08:27:21,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:21,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:21,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:27:21,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:21,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash 745619404, now seen corresponding path program 1 times [2020-10-13 08:27:21,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:21,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257844482] [2020-10-13 08:27:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:22,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:27:22,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:22,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-13 08:27:22,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:22,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:27:22,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:27:22,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:22,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:27:22,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:22,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:22,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:27:22,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:22,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:27:22,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:22,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:27:22,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:22,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257844482] [2020-10-13 08:27:22,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:22,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:22,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937148181] [2020-10-13 08:27:22,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:22,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:22,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:22,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:22,724 INFO L87 Difference]: Start difference. First operand 3111 states and 4905 transitions. Second operand 5 states. [2020-10-13 08:27:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:35,877 INFO L93 Difference]: Finished difference Result 9346 states and 14957 transitions. [2020-10-13 08:27:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:35,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 08:27:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:35,918 INFO L225 Difference]: With dead ends: 9346 [2020-10-13 08:27:35,918 INFO L226 Difference]: Without dead ends: 6241 [2020-10-13 08:27:35,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2020-10-13 08:27:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6229. [2020-10-13 08:27:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6229 states. [2020-10-13 08:27:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 8863 transitions. [2020-10-13 08:27:36,133 INFO L78 Accepts]: Start accepts. Automaton has 6229 states and 8863 transitions. Word has length 108 [2020-10-13 08:27:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:36,134 INFO L479 AbstractCegarLoop]: Abstraction has 6229 states and 8863 transitions. [2020-10-13 08:27:36,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6229 states and 8863 transitions. [2020-10-13 08:27:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 08:27:36,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:36,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:36,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:27:36,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:36,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:36,153 INFO L82 PathProgramCache]: Analyzing trace with hash 642436613, now seen corresponding path program 1 times [2020-10-13 08:27:36,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:36,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92046041] [2020-10-13 08:27:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:27:37,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-13 08:27:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 08:27:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:27:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:27:37,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:37,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:37,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:37,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:27:37,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:37,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:27:37,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 08:27:37,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:27:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:37,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92046041] [2020-10-13 08:27:37,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:37,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:37,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383230895] [2020-10-13 08:27:37,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:37,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:37,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:37,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:37,294 INFO L87 Difference]: Start difference. First operand 6229 states and 8863 transitions. Second operand 5 states. [2020-10-13 08:27:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:50,896 INFO L93 Difference]: Finished difference Result 15571 states and 22849 transitions. [2020-10-13 08:27:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:50,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 08:27:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:50,948 INFO L225 Difference]: With dead ends: 15571 [2020-10-13 08:27:50,948 INFO L226 Difference]: Without dead ends: 9348 [2020-10-13 08:27:50,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2020-10-13 08:27:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 9332. [2020-10-13 08:27:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-13 08:27:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 12407 transitions. [2020-10-13 08:27:51,217 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 12407 transitions. Word has length 109 [2020-10-13 08:27:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:51,219 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 12407 transitions. [2020-10-13 08:27:51,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 12407 transitions. [2020-10-13 08:27:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 08:27:51,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:51,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:51,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:27:51,223 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:51,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2079791956, now seen corresponding path program 1 times [2020-10-13 08:27:51,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:51,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911166813] [2020-10-13 08:27:51,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:52,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:27:52,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-13 08:27:52,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:27:52,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:27:52,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:52,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:52,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:52,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:27:52,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:52,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:27:52,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:27:52,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:27:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:52,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911166813] [2020-10-13 08:27:52,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:52,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:52,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740941292] [2020-10-13 08:27:52,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:52,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:52,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:52,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:52,470 INFO L87 Difference]: Start difference. First operand 9332 states and 12407 transitions. Second operand 5 states. [2020-10-13 08:28:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:07,471 INFO L93 Difference]: Finished difference Result 23337 states and 31745 transitions. [2020-10-13 08:28:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:07,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 08:28:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:07,539 INFO L225 Difference]: With dead ends: 23337 [2020-10-13 08:28:07,540 INFO L226 Difference]: Without dead ends: 14011 [2020-10-13 08:28:07,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14011 states. [2020-10-13 08:28:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14011 to 13984. [2020-10-13 08:28:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13984 states. [2020-10-13 08:28:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13984 states to 13984 states and 18586 transitions. [2020-10-13 08:28:07,940 INFO L78 Accepts]: Start accepts. Automaton has 13984 states and 18586 transitions. Word has length 124 [2020-10-13 08:28:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:07,941 INFO L479 AbstractCegarLoop]: Abstraction has 13984 states and 18586 transitions. [2020-10-13 08:28:07,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 13984 states and 18586 transitions. [2020-10-13 08:28:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 08:28:07,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:07,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:07,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:28:07,946 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:07,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:07,947 INFO L82 PathProgramCache]: Analyzing trace with hash 44354888, now seen corresponding path program 1 times [2020-10-13 08:28:07,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:07,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022179315] [2020-10-13 08:28:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:08,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:08,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:08,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 08:28:08,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:28:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-10-13 08:28:08,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:28:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:28:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:08,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:08,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:08,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:28:08,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:08,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:09,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:09,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:28:09,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:28:09,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:28:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:28:09,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022179315] [2020-10-13 08:28:09,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:09,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:09,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003545882] [2020-10-13 08:28:09,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:09,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:09,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:09,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:09,080 INFO L87 Difference]: Start difference. First operand 13984 states and 18586 transitions. Second operand 5 states. [2020-10-13 08:28:23,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:23,509 INFO L93 Difference]: Finished difference Result 34964 states and 48346 transitions. [2020-10-13 08:28:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:23,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 08:28:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:23,585 INFO L225 Difference]: With dead ends: 34964 [2020-10-13 08:28:23,585 INFO L226 Difference]: Without dead ends: 20986 [2020-10-13 08:28:23,616 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 [2020-10-13 08:28:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20986 states. [2020-10-13 08:28:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20986 to 20206. [2020-10-13 08:28:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20206 states. [2020-10-13 08:28:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20206 states to 20206 states and 26685 transitions. [2020-10-13 08:28:24,076 INFO L78 Accepts]: Start accepts. Automaton has 20206 states and 26685 transitions. Word has length 126 [2020-10-13 08:28:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:24,077 INFO L479 AbstractCegarLoop]: Abstraction has 20206 states and 26685 transitions. [2020-10-13 08:28:24,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 20206 states and 26685 transitions. [2020-10-13 08:28:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-13 08:28:24,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:24,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:24,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:28:24,089 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:24,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:24,090 INFO L82 PathProgramCache]: Analyzing trace with hash 9589852, now seen corresponding path program 1 times [2020-10-13 08:28:24,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:24,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679245106] [2020-10-13 08:28:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:25,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:25,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 08:28:25,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:25,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1350 [2020-10-13 08:28:25,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-13 08:28:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:28:25,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:25,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:25,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:25,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:28:25,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:25,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:25,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:25,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:28:25,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 08:28:25,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:25,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-13 08:28:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:28:26,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679245106] [2020-10-13 08:28:26,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:26,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:26,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902167932] [2020-10-13 08:28:26,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:26,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:26,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:26,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:26,116 INFO L87 Difference]: Start difference. First operand 20206 states and 26685 transitions. Second operand 5 states. [2020-10-13 08:28:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:37,276 INFO L93 Difference]: Finished difference Result 40439 states and 53488 transitions. [2020-10-13 08:28:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:37,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-13 08:28:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:37,361 INFO L225 Difference]: With dead ends: 40439 [2020-10-13 08:28:37,362 INFO L226 Difference]: Without dead ends: 20219 [2020-10-13 08:28:37,402 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 [2020-10-13 08:28:37,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2020-10-13 08:28:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 20206. [2020-10-13 08:28:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20206 states. [2020-10-13 08:28:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20206 states to 20206 states and 26680 transitions. [2020-10-13 08:28:37,808 INFO L78 Accepts]: Start accepts. Automaton has 20206 states and 26680 transitions. Word has length 228 [2020-10-13 08:28:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:37,808 INFO L479 AbstractCegarLoop]: Abstraction has 20206 states and 26680 transitions. [2020-10-13 08:28:37,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 20206 states and 26680 transitions. [2020-10-13 08:28:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-13 08:28:37,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:37,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:37,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:28:37,836 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:37,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1327752488, now seen corresponding path program 1 times [2020-10-13 08:28:37,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:37,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442858869] [2020-10-13 08:28:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:41,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 08:28:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3581 [2020-10-13 08:28:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 315 [2020-10-13 08:28:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:28:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:41,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:41,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:41,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:41,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:41,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:41,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:28:41,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:41,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:41,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:41,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:28:41,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:28:41,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:41,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 08:28:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:41,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:41,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:28:41,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:41,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 08:28:41,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:28:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 08:28:42,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442858869] [2020-10-13 08:28:42,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:42,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:42,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597912504] [2020-10-13 08:28:42,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:42,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:42,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:42,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:42,246 INFO L87 Difference]: Start difference. First operand 20206 states and 26680 transitions. Second operand 5 states. [2020-10-13 08:28:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:57,653 INFO L93 Difference]: Finished difference Result 53588 states and 73634 transitions. [2020-10-13 08:28:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:57,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2020-10-13 08:28:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:57,911 INFO L225 Difference]: With dead ends: 53588 [2020-10-13 08:28:57,911 INFO L226 Difference]: Without dead ends: 33388 [2020-10-13 08:28:57,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:57,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33388 states. [2020-10-13 08:28:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33388 to 33375. [2020-10-13 08:28:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33375 states. [2020-10-13 08:28:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33375 states to 33375 states and 42652 transitions. [2020-10-13 08:28:58,564 INFO L78 Accepts]: Start accepts. Automaton has 33375 states and 42652 transitions. Word has length 341 [2020-10-13 08:28:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:58,565 INFO L479 AbstractCegarLoop]: Abstraction has 33375 states and 42652 transitions. [2020-10-13 08:28:58,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 33375 states and 42652 transitions. [2020-10-13 08:28:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2020-10-13 08:28:58,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:58,641 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:58,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:28:58,641 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:58,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:58,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1552000261, now seen corresponding path program 1 times [2020-10-13 08:28:58,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:58,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850238120] [2020-10-13 08:28:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:03,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:03,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-13 08:29:03,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:29:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 08:29:03,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:29:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:29:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:04,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:04,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:04,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:04,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:04,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:04,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:29:04,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:04,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:04,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:04,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:04,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:04,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:29:04,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:29:04,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:29:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:04,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:04,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:04,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:29:04,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 08:29:04,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:29:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 08:29:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:05,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:05,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 08:29:05,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:29:05,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-13 08:29:05,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:29:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 353 [2020-10-13 08:29:05,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:05,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:29:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:05,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:05,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 08:29:05,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:29:05,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 08:29:05,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:29:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 08:29:08,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850238120] [2020-10-13 08:29:08,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:08,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:29:08,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352508435] [2020-10-13 08:29:08,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:29:08,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:08,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:29:08,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:08,057 INFO L87 Difference]: Start difference. First operand 33375 states and 42652 transitions. Second operand 6 states. [2020-10-13 08:29:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:20,968 INFO L93 Difference]: Finished difference Result 66784 states and 85503 transitions. [2020-10-13 08:29:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:29:20,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 554 [2020-10-13 08:29:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:21,089 INFO L225 Difference]: With dead ends: 66784 [2020-10-13 08:29:21,090 INFO L226 Difference]: Without dead ends: 33403 [2020-10-13 08:29:21,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:29:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33403 states. [2020-10-13 08:29:21,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33403 to 33375. [2020-10-13 08:29:21,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33375 states. [2020-10-13 08:29:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33375 states to 33375 states and 42646 transitions. [2020-10-13 08:29:21,721 INFO L78 Accepts]: Start accepts. Automaton has 33375 states and 42646 transitions. Word has length 554 [2020-10-13 08:29:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:21,722 INFO L479 AbstractCegarLoop]: Abstraction has 33375 states and 42646 transitions. [2020-10-13 08:29:21,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:29:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 33375 states and 42646 transitions. [2020-10-13 08:29:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-13 08:29:21,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:21,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:21,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:29:21,795 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:21,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1210343756, now seen corresponding path program 1 times [2020-10-13 08:29:21,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:21,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618437366] [2020-10-13 08:29:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:23,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:26,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:26,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-10-13 08:29:26,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:29:26,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 08:29:26,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 562 [2020-10-13 08:29:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:29:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:27,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:27,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:27,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:29:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:27,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:27,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:29:27,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:27,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:29:27,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:27,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:27,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:29:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:27,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:27,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:27,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:29:27,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:29:27,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-13 08:29:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:27,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:27,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 08:29:27,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-13 08:29:27,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 344 [2020-10-13 08:29:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:27,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:29:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:27,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:27,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 08:29:27,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:29:27,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:27,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 08:29:27,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-13 08:29:28,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618437366] [2020-10-13 08:29:28,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:28,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:29:28,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201570082] [2020-10-13 08:29:28,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:29:28,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:28,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:29:28,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:29:28,293 INFO L87 Difference]: Start difference. First operand 33375 states and 42646 transitions. Second operand 5 states. [2020-10-13 08:29:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:45,987 INFO L93 Difference]: Finished difference Result 76043 states and 100037 transitions. [2020-10-13 08:29:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:29:45,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 587 [2020-10-13 08:29:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:46,130 INFO L225 Difference]: With dead ends: 76043 [2020-10-13 08:29:46,130 INFO L226 Difference]: Without dead ends: 42674 [2020-10-13 08:29:46,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42674 states. [2020-10-13 08:29:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42674 to 42662. [2020-10-13 08:29:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42662 states. [2020-10-13 08:29:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42662 states to 42662 states and 53446 transitions. [2020-10-13 08:29:46,893 INFO L78 Accepts]: Start accepts. Automaton has 42662 states and 53446 transitions. Word has length 587 [2020-10-13 08:29:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:46,894 INFO L479 AbstractCegarLoop]: Abstraction has 42662 states and 53446 transitions. [2020-10-13 08:29:46,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:29:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 42662 states and 53446 transitions. [2020-10-13 08:29:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-13 08:29:46,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:46,975 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:46,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:29:46,976 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:46,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1634350802, now seen corresponding path program 1 times [2020-10-13 08:29:46,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:46,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173530045] [2020-10-13 08:29:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 839 [2020-10-13 08:29:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:29:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 08:29:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:29:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:29:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:29:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:52,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:29:52,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:29:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:52,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:29:52,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 08:29:52,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:29:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:29:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:29:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:52,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:52,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:29:52,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-13 08:29:52,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:29:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:52,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:29:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:53,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:29:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:29:53,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:29:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:53,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:53,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:29:53,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:29:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 62 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:29:55,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173530045] [2020-10-13 08:29:55,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:55,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:29:55,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587474320] [2020-10-13 08:29:55,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:29:55,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:55,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:29:55,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:29:55,096 INFO L87 Difference]: Start difference. First operand 42662 states and 53446 transitions. Second operand 7 states. [2020-10-13 08:30:16,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:16,040 INFO L93 Difference]: Finished difference Result 110557 states and 140221 transitions. [2020-10-13 08:30:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:30:16,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 823 [2020-10-13 08:30:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:16,347 INFO L225 Difference]: With dead ends: 110557 [2020-10-13 08:30:16,348 INFO L226 Difference]: Without dead ends: 67901 [2020-10-13 08:30:16,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:30:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67901 states. [2020-10-13 08:30:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67901 to 66995. [2020-10-13 08:30:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66995 states. [2020-10-13 08:30:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66995 states to 66995 states and 81047 transitions. [2020-10-13 08:30:17,879 INFO L78 Accepts]: Start accepts. Automaton has 66995 states and 81047 transitions. Word has length 823 [2020-10-13 08:30:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:17,880 INFO L479 AbstractCegarLoop]: Abstraction has 66995 states and 81047 transitions. [2020-10-13 08:30:17,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:30:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 66995 states and 81047 transitions. [2020-10-13 08:30:17,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-10-13 08:30:17,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:17,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:30:17,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:30:17,991 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:17,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2064116462, now seen corresponding path program 1 times [2020-10-13 08:30:17,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:17,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222064877] [2020-10-13 08:30:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:23,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 871 [2020-10-13 08:30:23,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:30:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 08:30:23,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:30:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:30:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 08:30:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:23,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:23,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:23,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:23,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:23,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:30:23,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:30:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:23,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:23,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:30:23,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 08:30:23,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:30:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:30:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:23,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:30:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:23,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:23,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:30:23,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:23,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-13 08:30:23,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:23,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:23,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:30:23,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:30:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:24,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:24,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:30:24,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:30:24,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:24,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:24,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:30:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:24,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:24,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:30:24,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 08:30:24,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 62 proven. 121 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:30:25,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222064877] [2020-10-13 08:30:25,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:25,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:30:25,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270267693] [2020-10-13 08:30:25,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:30:25,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:25,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:30:25,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:30:25,035 INFO L87 Difference]: Start difference. First operand 66995 states and 81047 transitions. Second operand 7 states.