/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:32:18,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:32:18,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:32:18,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:32:18,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:32:18,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:32:18,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:32:18,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:32:18,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:32:18,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:32:18,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:32:18,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:32:18,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:32:18,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:32:18,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:32:18,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:32:18,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:32:18,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:32:18,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:32:18,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:32:18,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:32:18,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:32:18,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:32:18,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:32:18,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:32:18,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:32:18,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:32:18,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:32:18,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:32:18,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:32:18,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:32:18,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:32:18,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:32:18,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:32:18,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:32:18,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:32:18,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:32:18,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:32:18,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:32:18,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:32:18,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:32:18,808 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 [2020-09-21 12:32:18,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:32:18,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:32:18,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:32:18,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:32:18,835 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:32:18,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:32:18,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:32:18,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:32:18,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:32:18,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:32:18,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:32:18,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:32:18,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:32:18,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:32:18,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:32:18,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:32:18,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:32:18,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:32:18,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:32:18,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:32:18,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:32:18,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:18,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:32:18,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:32:18,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:32:18,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:32:18,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:32:18,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:32:18,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:32:18,840 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:32:19,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:32:19,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:32:19,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:32:19,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:32:19,310 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:32:19,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-21 12:32:19,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052bd9cb8/e03c7db8ecc84c11b5ce4fec42766165/FLAG601f6bc79 [2020-09-21 12:32:20,069 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:32:20,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-21 12:32:20,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052bd9cb8/e03c7db8ecc84c11b5ce4fec42766165/FLAG601f6bc79 [2020-09-21 12:32:20,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/052bd9cb8/e03c7db8ecc84c11b5ce4fec42766165 [2020-09-21 12:32:20,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:32:20,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:32:20,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:20,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:32:20,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:32:20,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:20" (1/1) ... [2020-09-21 12:32:20,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d7e22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:20, skipping insertion in model container [2020-09-21 12:32:20,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:20" (1/1) ... [2020-09-21 12:32:20,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:32:20,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:32:20,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:20,875 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:32:21,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:21,197 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:32:21,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21 WrapperNode [2020-09-21 12:32:21,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:21,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:32:21,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:32:21,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:32:21,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (1/1) ... [2020-09-21 12:32:21,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (1/1) ... [2020-09-21 12:32:21,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (1/1) ... [2020-09-21 12:32:21,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (1/1) ... [2020-09-21 12:32:21,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (1/1) ... [2020-09-21 12:32:21,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (1/1) ... [2020-09-21 12:32:21,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (1/1) ... [2020-09-21 12:32:21,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:32:21,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:32:21,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:32:21,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:32:21,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (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 [2020-09-21 12:32:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:32:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:32:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:32:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:32:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:32:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:32:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:32:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:32:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:32:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:32:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:32:23,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:32:23,117 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:32:23,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:23 BoogieIcfgContainer [2020-09-21 12:32:23,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:32:23,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:32:23,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:32:23,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:32:23,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:32:20" (1/3) ... [2020-09-21 12:32:23,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e6760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:23, skipping insertion in model container [2020-09-21 12:32:23,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:21" (2/3) ... [2020-09-21 12:32:23,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e6760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:23, skipping insertion in model container [2020-09-21 12:32:23,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:23" (3/3) ... [2020-09-21 12:32:23,136 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-21 12:32:23,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:32:23,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:32:23,181 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:32:23,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:32:23,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:32:23,213 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:32:23,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:32:23,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:32:23,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:32:23,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:32:23,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:32:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-09-21 12:32:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:32:23,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:23,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:23,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:23,260 INFO L82 PathProgramCache]: Analyzing trace with hash -736368013, now seen corresponding path program 1 times [2020-09-21 12:32:23,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:23,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987351181] [2020-09-21 12:32:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:23,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:23,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-21 12:32:23,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:23,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-09-21 12:32:23,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:23,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:23,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:23,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 12:32:23,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:32:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:24,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:24,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:24,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:32:24,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:24,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987351181] [2020-09-21 12:32:24,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:24,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:32:24,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108906302] [2020-09-21 12:32:24,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:24,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:24,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:24,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:24,161 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2020-09-21 12:32:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:26,020 INFO L93 Difference]: Finished difference Result 698 states and 1240 transitions. [2020-09-21 12:32:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:26,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-21 12:32:26,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:26,047 INFO L225 Difference]: With dead ends: 698 [2020-09-21 12:32:26,047 INFO L226 Difference]: Without dead ends: 380 [2020-09-21 12:32:26,056 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 [2020-09-21 12:32:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-21 12:32:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-09-21 12:32:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:32:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 552 transitions. [2020-09-21 12:32:26,165 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 552 transitions. Word has length 40 [2020-09-21 12:32:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:26,166 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 552 transitions. [2020-09-21 12:32:26,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 552 transitions. [2020-09-21 12:32:26,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-21 12:32:26,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:26,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:26,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:32:26,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:26,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:26,173 INFO L82 PathProgramCache]: Analyzing trace with hash 587538301, now seen corresponding path program 1 times [2020-09-21 12:32:26,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:26,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848387553] [2020-09-21 12:32:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:27,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-21 12:32:27,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-21 12:32:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-21 12:32:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:32:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:27,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:27,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:27,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:27,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:27,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-21 12:32:27,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:27,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-21 12:32:27,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-21 12:32:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:27,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848387553] [2020-09-21 12:32:27,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:27,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:27,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119016397] [2020-09-21 12:32:27,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:27,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:27,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:27,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:27,558 INFO L87 Difference]: Start difference. First operand 376 states and 552 transitions. Second operand 5 states. [2020-09-21 12:32:28,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:28,713 INFO L93 Difference]: Finished difference Result 783 states and 1143 transitions. [2020-09-21 12:32:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:28,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-09-21 12:32:28,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:28,717 INFO L225 Difference]: With dead ends: 783 [2020-09-21 12:32:28,717 INFO L226 Difference]: Without dead ends: 380 [2020-09-21 12:32:28,720 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 [2020-09-21 12:32:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-21 12:32:28,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-09-21 12:32:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:32:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 506 transitions. [2020-09-21 12:32:28,743 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 506 transitions. Word has length 109 [2020-09-21 12:32:28,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:28,743 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 506 transitions. [2020-09-21 12:32:28,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 506 transitions. [2020-09-21 12:32:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-21 12:32:28,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:28,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:28,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:32:28,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:28,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:28,747 INFO L82 PathProgramCache]: Analyzing trace with hash 673735349, now seen corresponding path program 1 times [2020-09-21 12:32:28,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:28,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765626034] [2020-09-21 12:32:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:28,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:29,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:32:29,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:29,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-21 12:32:29,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:32:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:32:29,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:29,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:29,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:29,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:29,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:29,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:29,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:29,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:29,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:32:29,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:30,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765626034] [2020-09-21 12:32:30,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:30,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:30,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173286120] [2020-09-21 12:32:30,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:30,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:30,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:30,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:30,080 INFO L87 Difference]: Start difference. First operand 376 states and 506 transitions. Second operand 5 states. [2020-09-21 12:32:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:31,617 INFO L93 Difference]: Finished difference Result 934 states and 1292 transitions. [2020-09-21 12:32:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:31,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-09-21 12:32:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:31,628 INFO L225 Difference]: With dead ends: 934 [2020-09-21 12:32:31,628 INFO L226 Difference]: Without dead ends: 564 [2020-09-21 12:32:31,630 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 [2020-09-21 12:32:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-09-21 12:32:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2020-09-21 12:32:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-09-21 12:32:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 699 transitions. [2020-09-21 12:32:31,671 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 699 transitions. Word has length 113 [2020-09-21 12:32:31,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:31,671 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 699 transitions. [2020-09-21 12:32:31,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 699 transitions. [2020-09-21 12:32:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-21 12:32:31,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:31,685 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:31,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:32:31,685 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:31,686 INFO L82 PathProgramCache]: Analyzing trace with hash 871588671, now seen corresponding path program 1 times [2020-09-21 12:32:31,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:31,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945801412] [2020-09-21 12:32:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:31,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:32,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-21 12:32:32,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:32:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-09-21 12:32:32,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:32:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-21 12:32:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:32,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:32,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:32,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:32,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:32,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:33,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:33,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:33,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 12:32:33,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:33,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 12:32:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:33,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:33,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:32:33,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-21 12:32:33,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 12:32:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:33,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945801412] [2020-09-21 12:32:33,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:33,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:33,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048561981] [2020-09-21 12:32:33,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:33,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:33,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:33,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:33,446 INFO L87 Difference]: Start difference. First operand 560 states and 699 transitions. Second operand 7 states. [2020-09-21 12:32:35,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:35,352 INFO L93 Difference]: Finished difference Result 1316 states and 1614 transitions. [2020-09-21 12:32:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:35,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-21 12:32:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:35,356 INFO L225 Difference]: With dead ends: 1316 [2020-09-21 12:32:35,356 INFO L226 Difference]: Without dead ends: 576 [2020-09-21 12:32:35,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:35,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-09-21 12:32:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 562. [2020-09-21 12:32:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-21 12:32:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 624 transitions. [2020-09-21 12:32:35,380 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 624 transitions. Word has length 196 [2020-09-21 12:32:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:35,380 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 624 transitions. [2020-09-21 12:32:35,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:35,381 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 624 transitions. [2020-09-21 12:32:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-21 12:32:35,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:35,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:35,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:35,384 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2057579519, now seen corresponding path program 1 times [2020-09-21 12:32:35,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:35,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331761261] [2020-09-21 12:32:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-21 12:32:36,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-21 12:32:36,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-21 12:32:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:36,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:36,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:36,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-21 12:32:36,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:37,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331761261] [2020-09-21 12:32:37,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:37,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:32:37,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636622310] [2020-09-21 12:32:37,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:37,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:37,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:37,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:37,079 INFO L87 Difference]: Start difference. First operand 562 states and 624 transitions. Second operand 7 states. [2020-09-21 12:32:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:38,520 INFO L93 Difference]: Finished difference Result 1514 states and 1714 transitions. [2020-09-21 12:32:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:38,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-09-21 12:32:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:38,528 INFO L225 Difference]: With dead ends: 1514 [2020-09-21 12:32:38,528 INFO L226 Difference]: Without dead ends: 958 [2020-09-21 12:32:38,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:38,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-09-21 12:32:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 934. [2020-09-21 12:32:38,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2020-09-21 12:32:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1017 transitions. [2020-09-21 12:32:38,574 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1017 transitions. Word has length 219 [2020-09-21 12:32:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:38,576 INFO L479 AbstractCegarLoop]: Abstraction has 934 states and 1017 transitions. [2020-09-21 12:32:38,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1017 transitions. [2020-09-21 12:32:38,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-21 12:32:38,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:38,581 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:38,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:38,581 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:38,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2105911161, now seen corresponding path program 1 times [2020-09-21 12:32:38,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:38,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222896569] [2020-09-21 12:32:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:39,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-09-21 12:32:39,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:39,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-21 12:32:39,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-09-21 12:32:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:32:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:39,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:39,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:39,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:39,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:39,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:39,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:39,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:39,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:32:39,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:39,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:39,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:32:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:40,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:40,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:40,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-21 12:32:40,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:40,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-21 12:32:40,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-09-21 12:32:40,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222896569] [2020-09-21 12:32:40,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:40,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:40,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239371236] [2020-09-21 12:32:40,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:40,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:40,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:40,200 INFO L87 Difference]: Start difference. First operand 934 states and 1017 transitions. Second operand 5 states. [2020-09-21 12:32:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:41,432 INFO L93 Difference]: Finished difference Result 2238 states and 2483 transitions. [2020-09-21 12:32:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:41,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-09-21 12:32:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:41,439 INFO L225 Difference]: With dead ends: 2238 [2020-09-21 12:32:41,439 INFO L226 Difference]: Without dead ends: 1310 [2020-09-21 12:32:41,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-09-21 12:32:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1304. [2020-09-21 12:32:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2020-09-21 12:32:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1443 transitions. [2020-09-21 12:32:41,477 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1443 transitions. Word has length 328 [2020-09-21 12:32:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:41,478 INFO L479 AbstractCegarLoop]: Abstraction has 1304 states and 1443 transitions. [2020-09-21 12:32:41,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1443 transitions. [2020-09-21 12:32:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-09-21 12:32:41,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:41,486 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, 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, 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] [2020-09-21 12:32:41,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:32:41,486 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:41,487 INFO L82 PathProgramCache]: Analyzing trace with hash -290386654, now seen corresponding path program 1 times [2020-09-21 12:32:41,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:41,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986524120] [2020-09-21 12:32:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-09-21 12:32:42,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-21 12:32:42,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 377 [2020-09-21 12:32:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:32:42,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:42,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:42,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:42,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:42,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:32:42,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:32:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:42,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:32:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:42,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-21 12:32:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:43,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:32:43,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 12:32:43,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:32:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-09-21 12:32:43,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986524120] [2020-09-21 12:32:43,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:43,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:43,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607478244] [2020-09-21 12:32:43,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:43,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:43,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:43,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:43,222 INFO L87 Difference]: Start difference. First operand 1304 states and 1443 transitions. Second operand 5 states. [2020-09-21 12:32:44,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:44,374 INFO L93 Difference]: Finished difference Result 3162 states and 3574 transitions. [2020-09-21 12:32:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:44,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 402 [2020-09-21 12:32:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:44,384 INFO L225 Difference]: With dead ends: 3162 [2020-09-21 12:32:44,385 INFO L226 Difference]: Without dead ends: 1864 [2020-09-21 12:32:44,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2020-09-21 12:32:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1860. [2020-09-21 12:32:44,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1860 states. [2020-09-21 12:32:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 2063 transitions. [2020-09-21 12:32:44,435 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 2063 transitions. Word has length 402 [2020-09-21 12:32:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:44,436 INFO L479 AbstractCegarLoop]: Abstraction has 1860 states and 2063 transitions. [2020-09-21 12:32:44,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 2063 transitions. [2020-09-21 12:32:44,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-09-21 12:32:44,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:44,441 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-09-21 12:32:44,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:32:44,441 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:44,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1452304054, now seen corresponding path program 1 times [2020-09-21 12:32:44,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:44,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688584431] [2020-09-21 12:32:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-21 12:32:45,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-09-21 12:32:45,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-21 12:32:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:32:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:45,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:45,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:32:45,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:45,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:45,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:45,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-21 12:32:45,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:32:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:46,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:46,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-21 12:32:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-21 12:32:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:46,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:46,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:32:46,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:46,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:32:46,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-21 12:32:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 209 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-21 12:32:46,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688584431] [2020-09-21 12:32:46,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:46,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:46,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654791292] [2020-09-21 12:32:46,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:46,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:46,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:46,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:46,728 INFO L87 Difference]: Start difference. First operand 1860 states and 2063 transitions. Second operand 7 states. [2020-09-21 12:32:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:48,293 INFO L93 Difference]: Finished difference Result 4456 states and 4979 transitions. [2020-09-21 12:32:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:32:48,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-09-21 12:32:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:48,310 INFO L225 Difference]: With dead ends: 4456 [2020-09-21 12:32:48,310 INFO L226 Difference]: Without dead ends: 2602 [2020-09-21 12:32:48,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:32:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2020-09-21 12:32:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2602. [2020-09-21 12:32:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2602 states. [2020-09-21 12:32:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 2853 transitions. [2020-09-21 12:32:48,384 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 2853 transitions. Word has length 408 [2020-09-21 12:32:48,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:48,384 INFO L479 AbstractCegarLoop]: Abstraction has 2602 states and 2853 transitions. [2020-09-21 12:32:48,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 2853 transitions. [2020-09-21 12:32:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-09-21 12:32:48,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:48,391 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:48,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:32:48,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:48,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:48,393 INFO L82 PathProgramCache]: Analyzing trace with hash -745719943, now seen corresponding path program 1 times [2020-09-21 12:32:48,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:48,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860382756] [2020-09-21 12:32:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-09-21 12:32:49,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-09-21 12:32:49,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-21 12:32:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-21 12:32:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:49,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:49,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:49,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:32:49,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 12:32:49,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-21 12:32:49,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:49,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:32:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:32:49,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-21 12:32:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-21 12:32:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-09-21 12:32:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:50,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:50,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-21 12:32:50,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 12:32:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:50,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-21 12:32:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:32:50,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:32:50,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-21 12:32:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 247 proven. 209 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-09-21 12:32:50,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860382756] [2020-09-21 12:32:50,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:50,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:50,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149520798] [2020-09-21 12:32:50,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:50,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:50,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:50,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:50,717 INFO L87 Difference]: Start difference. First operand 2602 states and 2853 transitions. Second operand 7 states. [2020-09-21 12:32:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:52,454 INFO L93 Difference]: Finished difference Result 5394 states and 5972 transitions. [2020-09-21 12:32:52,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:32:52,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 542 [2020-09-21 12:32:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:52,470 INFO L225 Difference]: With dead ends: 5394 [2020-09-21 12:32:52,471 INFO L226 Difference]: Without dead ends: 2980 [2020-09-21 12:32:52,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-09-21 12:32:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2610. [2020-09-21 12:32:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-09-21 12:32:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 2849 transitions. [2020-09-21 12:32:52,547 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 2849 transitions. Word has length 542 [2020-09-21 12:32:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:52,548 INFO L479 AbstractCegarLoop]: Abstraction has 2610 states and 2849 transitions. [2020-09-21 12:32:52,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 2849 transitions. [2020-09-21 12:32:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-09-21 12:32:52,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:52,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-09-21 12:32:52,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:32:52,557 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:52,557 INFO L82 PathProgramCache]: Analyzing trace with hash 632596557, now seen corresponding path program 1 times [2020-09-21 12:32:52,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:52,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013656722] [2020-09-21 12:32:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:53,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:53,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-09-21 12:32:53,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:32:53,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 351 [2020-09-21 12:32:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:32:53,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:53,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:53,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:53,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:53,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:53,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:53,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:53,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:53,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:53,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:32:53,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:32:53,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:53,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:53,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:32:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:53,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:53,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:53,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:53,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:32:53,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 12:32:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:54,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:32:54,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-21 12:32:54,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-21 12:32:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 12:32:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:54,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:54,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:54,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:54,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-21 12:32:54,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-09-21 12:32:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:54,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:54,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:32:54,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:32:54,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-21 12:32:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 514 proven. 79 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-09-21 12:32:55,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013656722] [2020-09-21 12:32:55,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:55,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:55,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607211859] [2020-09-21 12:32:55,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:55,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:55,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:55,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:55,060 INFO L87 Difference]: Start difference. First operand 2610 states and 2849 transitions. Second operand 7 states. [2020-09-21 12:32:56,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:56,583 INFO L93 Difference]: Finished difference Result 5594 states and 6236 transitions. [2020-09-21 12:32:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:56,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 635 [2020-09-21 12:32:56,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:56,597 INFO L225 Difference]: With dead ends: 5594 [2020-09-21 12:32:56,597 INFO L226 Difference]: Without dead ends: 3172 [2020-09-21 12:32:56,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2020-09-21 12:32:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3162. [2020-09-21 12:32:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3162 states. [2020-09-21 12:32:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 3479 transitions. [2020-09-21 12:32:56,668 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 3479 transitions. Word has length 635 [2020-09-21 12:32:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:56,669 INFO L479 AbstractCegarLoop]: Abstraction has 3162 states and 3479 transitions. [2020-09-21 12:32:56,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 3479 transitions. [2020-09-21 12:32:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2020-09-21 12:32:56,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:56,678 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:56,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:32:56,678 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:56,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1220853399, now seen corresponding path program 1 times [2020-09-21 12:32:56,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:56,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354834771] [2020-09-21 12:32:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 789 [2020-09-21 12:32:57,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-09-21 12:32:57,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 351 [2020-09-21 12:32:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-21 12:32:57,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:57,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:57,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:57,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:57,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:32:58,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:32:58,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:32:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:58,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:32:58,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 12:32:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:32:58,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-21 12:32:58,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:58,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-21 12:32:58,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 12:32:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:32:58,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-21 12:32:58,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-21 12:32:58,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:58,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-09-21 12:32:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:58,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:32:58,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 12:32:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2020-09-21 12:32:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:32:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:32:58,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-21 12:32:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 559 proven. 209 refuted. 0 times theorem prover too weak. 963 trivial. 0 not checked. [2020-09-21 12:32:59,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354834771] [2020-09-21 12:32:59,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:59,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:59,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099911480] [2020-09-21 12:32:59,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:59,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:59,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:59,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:59,344 INFO L87 Difference]: Start difference. First operand 3162 states and 3479 transitions. Second operand 7 states. [2020-09-21 12:33:00,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:00,744 INFO L93 Difference]: Finished difference Result 6142 states and 6779 transitions. [2020-09-21 12:33:00,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:33:00,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 768 [2020-09-21 12:33:00,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:00,756 INFO L225 Difference]: With dead ends: 6142 [2020-09-21 12:33:00,756 INFO L226 Difference]: Without dead ends: 3168 [2020-09-21 12:33:00,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:33:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2020-09-21 12:33:00,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 3164. [2020-09-21 12:33:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-09-21 12:33:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 3482 transitions. [2020-09-21 12:33:00,821 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 3482 transitions. Word has length 768 [2020-09-21 12:33:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:00,822 INFO L479 AbstractCegarLoop]: Abstraction has 3164 states and 3482 transitions. [2020-09-21 12:33:00,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 3482 transitions. [2020-09-21 12:33:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-09-21 12:33:00,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:00,833 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:00,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:33:00,833 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash -361391299, now seen corresponding path program 1 times [2020-09-21 12:33:00,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:00,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169793808] [2020-09-21 12:33:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-09-21 12:33:02,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:02,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-09-21 12:33:02,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 775 [2020-09-21 12:33:02,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:33:02,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:02,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:33:02,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:33:02,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:33:02,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:33:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:33:02,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:33:02,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 12:33:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:33:02,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:33:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 12:33:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 12:33:02,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:33:02,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 12:33:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:02,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 12:33:02,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-09-21 12:33:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:33:02,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:33:02,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:02,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 12:33:02,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 207 proven. 6 refuted. 0 times theorem prover too weak. 1544 trivial. 0 not checked. [2020-09-21 12:33:03,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169793808] [2020-09-21 12:33:03,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:03,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:33:03,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900561938] [2020-09-21 12:33:03,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:33:03,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:03,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:33:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:33:03,077 INFO L87 Difference]: Start difference. First operand 3164 states and 3482 transitions. Second operand 5 states. [2020-09-21 12:33:04,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:04,436 INFO L93 Difference]: Finished difference Result 6690 states and 7497 transitions. [2020-09-21 12:33:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:33:04,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 794 [2020-09-21 12:33:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:04,455 INFO L225 Difference]: With dead ends: 6690 [2020-09-21 12:33:04,455 INFO L226 Difference]: Without dead ends: 3714 [2020-09-21 12:33:04,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:33:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-09-21 12:33:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3714. [2020-09-21 12:33:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2020-09-21 12:33:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4167 transitions. [2020-09-21 12:33:04,536 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4167 transitions. Word has length 794 [2020-09-21 12:33:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:04,538 INFO L479 AbstractCegarLoop]: Abstraction has 3714 states and 4167 transitions. [2020-09-21 12:33:04,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:33:04,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4167 transitions. [2020-09-21 12:33:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-09-21 12:33:04,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:04,550 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:04,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:33:04,550 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:04,551 INFO L82 PathProgramCache]: Analyzing trace with hash 969051025, now seen corresponding path program 1 times [2020-09-21 12:33:04,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:04,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345203297] [2020-09-21 12:33:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:05,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:05,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 821 [2020-09-21 12:33:05,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:33:05,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-09-21 12:33:05,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 781 [2020-09-21 12:33:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:33:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:05,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:05,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:05,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:06,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:33:06,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:33:06,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:33:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:06,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:33:06,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:06,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:33:06,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 12:33:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:06,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:33:06,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:06,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:33:06,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:06,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 12:33:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:06,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 12:33:06,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:33:06,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:06,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 12:33:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:06,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:33:06,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-09-21 12:33:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:33:06,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:33:06,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:33:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1787 backedges. 207 proven. 6 refuted. 0 times theorem prover too weak. 1574 trivial. 0 not checked. [2020-09-21 12:33:06,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345203297] [2020-09-21 12:33:06,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:06,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:33:06,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204832763] [2020-09-21 12:33:06,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:33:06,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:06,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:33:06,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:33:06,680 INFO L87 Difference]: Start difference. First operand 3714 states and 4167 transitions. Second operand 5 states. [2020-09-21 12:33:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:07,943 INFO L93 Difference]: Finished difference Result 7608 states and 8624 transitions. [2020-09-21 12:33:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:33:07,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 800 [2020-09-21 12:33:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:07,954 INFO L225 Difference]: With dead ends: 7608 [2020-09-21 12:33:07,954 INFO L226 Difference]: Without dead ends: 3156 [2020-09-21 12:33:07,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:33:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2020-09-21 12:33:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3156. [2020-09-21 12:33:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3156 states. [2020-09-21 12:33:08,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3156 states to 3156 states and 3438 transitions. [2020-09-21 12:33:08,018 INFO L78 Accepts]: Start accepts. Automaton has 3156 states and 3438 transitions. Word has length 800 [2020-09-21 12:33:08,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:08,019 INFO L479 AbstractCegarLoop]: Abstraction has 3156 states and 3438 transitions. [2020-09-21 12:33:08,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:33:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3156 states and 3438 transitions. [2020-09-21 12:33:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2020-09-21 12:33:08,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:08,029 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:08,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:33:08,029 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:08,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:08,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1804680219, now seen corresponding path program 1 times [2020-09-21 12:33:08,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:08,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784874739] [2020-09-21 12:33:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking...