/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/jain_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:59:51,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:59:51,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:59:51,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:59:51,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:59:51,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:59:51,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:59:51,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:59:51,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:59:51,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:59:51,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:59:51,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:59:51,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:59:51,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:59:51,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:59:51,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:59:51,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:59:51,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:59:51,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:59:51,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:59:51,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:59:51,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:59:51,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:59:51,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:59:51,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:59:51,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:59:51,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:59:51,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:59:51,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:59:51,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:59:51,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:59:51,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:59:51,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:59:51,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:59:51,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:59:51,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:59:51,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:59:51,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:59:51,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:59:51,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:59:51,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:59:51,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:59:51,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:59:51,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:59:51,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:59:51,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:59:51,830 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:59:51,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:59:51,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:59:51,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:59:51,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:59:51,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:59:51,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:59:51,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:59:51,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:59:51,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:59:51,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:59:51,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:59:51,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:59:51,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:59:51,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:59:51,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:59:51,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:59:51,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:59:51,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:59:51,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:59:51,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:59:51,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:59:51,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:59:51,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:59:51,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:59:51,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:59:52,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:59:52,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:59:52,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:59:52,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:59:52,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:59:52,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_5-2.c [2020-10-27 14:59:52,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db34dffca/0f2983d86ec941f3b6bb93b156d56fc4/FLAG2968a4c8c [2020-10-27 14:59:53,016 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:59:53,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_5-2.c [2020-10-27 14:59:53,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db34dffca/0f2983d86ec941f3b6bb93b156d56fc4/FLAG2968a4c8c [2020-10-27 14:59:53,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db34dffca/0f2983d86ec941f3b6bb93b156d56fc4 [2020-10-27 14:59:53,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:59:53,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:59:53,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:59:53,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:59:53,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:59:53,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3b458a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53, skipping insertion in model container [2020-10-27 14:59:53,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:59:53,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:59:53,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:59:53,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:59:53,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:59:53,639 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:59:53,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53 WrapperNode [2020-10-27 14:59:53,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:59:53,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:59:53,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:59:53,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:59:53,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (1/1) ... [2020-10-27 14:59:53,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:59:53,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:59:53,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:59:53,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:59:53,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:59:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:59:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:59:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:59:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:59:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:59:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:59:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:59:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:59:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:59:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:59:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:59:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:59:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:59:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:59:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:59:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:59:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:59:53,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:59:54,123 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:59:54,124 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 14:59:54,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:54 BoogieIcfgContainer [2020-10-27 14:59:54,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:59:54,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:59:54,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:59:54,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:59:54,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:59:53" (1/3) ... [2020-10-27 14:59:54,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179fa13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:54, skipping insertion in model container [2020-10-27 14:59:54,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:53" (2/3) ... [2020-10-27 14:59:54,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179fa13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:54, skipping insertion in model container [2020-10-27 14:59:54,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:54" (3/3) ... [2020-10-27 14:59:54,149 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_5-2.c [2020-10-27 14:59:54,165 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:59:54,171 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:59:54,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:59:54,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:59:54,249 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:59:54,249 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:59:54,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:59:54,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:59:54,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:59:54,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:59:54,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:59:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-27 14:59:54,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 14:59:54,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:54,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:54,290 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:54,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1199457490, now seen corresponding path program 1 times [2020-10-27 14:59:54,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:54,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622525721] [2020-10-27 14:59:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:54,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:59:54,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-27 14:59:54,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:54,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:59:54,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:59:54,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:59:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:59:55,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:55,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:55,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:59:55,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:55,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622525721] [2020-10-27 14:59:55,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:59:55,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 14:59:55,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773871071] [2020-10-27 14:59:55,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:59:55,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:55,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:59:55,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:59:55,215 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 7 states. [2020-10-27 14:59:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:55,529 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-10-27 14:59:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:59:55,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-27 14:59:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:55,540 INFO L225 Difference]: With dead ends: 39 [2020-10-27 14:59:55,541 INFO L226 Difference]: Without dead ends: 22 [2020-10-27 14:59:55,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:59:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-27 14:59:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-27 14:59:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-27 14:59:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-27 14:59:55,594 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-10-27 14:59:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:55,595 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-27 14:59:55,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:59:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-27 14:59:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:59:55,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:55,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:55,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:59:55,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:55,598 INFO L82 PathProgramCache]: Analyzing trace with hash -680978417, now seen corresponding path program 1 times [2020-10-27 14:59:55,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:55,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810989686] [2020-10-27 14:59:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:55,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:59:55,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 14:59:55,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:59:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:59:55,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:59:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:56,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:56,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:56,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 14:59:56,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:56,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:59:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:56,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:56,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:59:56,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:59:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:56,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810989686] [2020-10-27 14:59:56,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:56,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:59:56,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280829647] [2020-10-27 14:59:56,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:59:56,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:56,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:59:56,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:59:56,205 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-10-27 14:59:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:56,594 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-27 14:59:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:59:56,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-27 14:59:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:56,596 INFO L225 Difference]: With dead ends: 31 [2020-10-27 14:59:56,596 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:59:56,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:59:56,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:59:56,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-27 14:59:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:59:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-27 14:59:56,609 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 18 [2020-10-27 14:59:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:56,609 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-27 14:59:56,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:59:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-27 14:59:56,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:59:56,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:56,611 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:56,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:59:56,612 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:56,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:56,613 INFO L82 PathProgramCache]: Analyzing trace with hash 682985520, now seen corresponding path program 2 times [2020-10-27 14:59:56,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:56,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885890706] [2020-10-27 14:59:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:56,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:59:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 14:59:56,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:59:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:59:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:59:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:56,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:56,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:56,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:56,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:59:56,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:56,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:56,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:59:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:56,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:56,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:56,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:59:56,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:56,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:56,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 14:59:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:56,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:56,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:56,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:59:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:59:56,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885890706] [2020-10-27 14:59:56,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:56,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:59:56,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116330909] [2020-10-27 14:59:56,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:59:56,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:56,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:59:56,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:59:56,995 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2020-10-27 14:59:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:57,457 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-10-27 14:59:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:59:57,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-27 14:59:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:57,459 INFO L225 Difference]: With dead ends: 37 [2020-10-27 14:59:57,459 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:59:57,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:59:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:59:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 14:59:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:59:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-27 14:59:57,473 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2020-10-27 14:59:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:57,474 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-27 14:59:57,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:59:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-27 14:59:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 14:59:57,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:57,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:57,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:59:57,476 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:57,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:57,477 INFO L82 PathProgramCache]: Analyzing trace with hash -593781871, now seen corresponding path program 3 times [2020-10-27 14:59:57,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:57,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412763662] [2020-10-27 14:59:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:57,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:57,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:59:57,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:57,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-27 14:59:57,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:57,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:59:57,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:59:57,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 14:59:57,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:57,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:57,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:59:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:59:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:57,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:57,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:57,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:59:57,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 14:59:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:58,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:58,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:59:58,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:58,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:59:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:58,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:59:58,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:59:58,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412763662] [2020-10-27 14:59:58,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:58,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:59:58,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261634191] [2020-10-27 14:59:58,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:59:58,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:58,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:59:58,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:59:58,039 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 10 states. [2020-10-27 14:59:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:58,791 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-10-27 14:59:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:59:58,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-27 14:59:58,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:58,793 INFO L225 Difference]: With dead ends: 43 [2020-10-27 14:59:58,793 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:59:58,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:59:58,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:59:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:59:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:59:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-27 14:59:58,820 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 30 [2020-10-27 14:59:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:58,820 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-27 14:59:58,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:59:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-27 14:59:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:59:58,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:58,825 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:58,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:59:58,825 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:58,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1381768654, now seen corresponding path program 4 times [2020-10-27 14:59:58,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:58,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659013579] [2020-10-27 14:59:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:59,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:59:59,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-27 14:59:59,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:59:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:59:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 14:59:59,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:59,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:59,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:59,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:59,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:59,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:59,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:59,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:59:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:59,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:59:59,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:59,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 14:59:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:59,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:59,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:59:59,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:59,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:59:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:59,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:59,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:59:59,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:59,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:59:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:59,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:59,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:59:59,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659013579] [2020-10-27 14:59:59,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:59,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:59:59,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224749743] [2020-10-27 14:59:59,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:59:59,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:59,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:59:59,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:59:59,518 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2020-10-27 15:00:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:00,118 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-27 15:00:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:00:00,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-27 15:00:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:00,119 INFO L225 Difference]: With dead ends: 49 [2020-10-27 15:00:00,120 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 15:00:00,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:00:00,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 15:00:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 15:00:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 15:00:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-10-27 15:00:00,134 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 36 [2020-10-27 15:00:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:00,134 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-10-27 15:00:00,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 15:00:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-10-27 15:00:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 15:00:00,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:00,136 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:00,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:00:00,136 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:00,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:00,137 INFO L82 PathProgramCache]: Analyzing trace with hash -777327597, now seen corresponding path program 5 times [2020-10-27 15:00:00,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:00,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981480692] [2020-10-27 15:00:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:00,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 15:00:00,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-27 15:00:00,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:00:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:00:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 15:00:00,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:00,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:00,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:00,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 15:00:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:00,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:00,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:00,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:00,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:00,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:00,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:00:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:00,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:00,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:00,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:00:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:00,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:00,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:00:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:00,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:00,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:00,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:00:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:00,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:00,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:00,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 15:00:00,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981480692] [2020-10-27 15:00:00,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:00,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 15:00:00,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101786021] [2020-10-27 15:00:00,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:00:00,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:00:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:00:00,831 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 12 states. [2020-10-27 15:00:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:01,498 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-10-27 15:00:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:00:01,499 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-27 15:00:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:01,500 INFO L225 Difference]: With dead ends: 55 [2020-10-27 15:00:01,500 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 15:00:01,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:00:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 15:00:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-27 15:00:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 15:00:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-10-27 15:00:01,530 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 42 [2020-10-27 15:00:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:01,531 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-10-27 15:00:01,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:00:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-10-27 15:00:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 15:00:01,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:01,536 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:01,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:00:01,536 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:01,537 INFO L82 PathProgramCache]: Analyzing trace with hash 719407412, now seen corresponding path program 6 times [2020-10-27 15:00:01,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:01,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94941122] [2020-10-27 15:00:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:01,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:01,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 15:00:01,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-27 15:00:01,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:00:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:00:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 15:00:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:02,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 15:00:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:02,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:02,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:02,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:02,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:00:02,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:02,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:00:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:02,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:02,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:02,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:02,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:00:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:02,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:02,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:02,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:02,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:02,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:02,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:00:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:02,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:02,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:02,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:02,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:02,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:02,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:02,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:00:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:02,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:02,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:02,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:02,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:02,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:02,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:02,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 15:00:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:02,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:02,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:02,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:02,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 15:00:02,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94941122] [2020-10-27 15:00:02,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:02,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 15:00:02,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188378154] [2020-10-27 15:00:02,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 15:00:02,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:02,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 15:00:02,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:00:02,303 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 13 states. [2020-10-27 15:00:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:03,016 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-10-27 15:00:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:00:03,017 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-27 15:00:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:03,018 INFO L225 Difference]: With dead ends: 61 [2020-10-27 15:00:03,019 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 15:00:03,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2020-10-27 15:00:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 15:00:03,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-27 15:00:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 15:00:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-10-27 15:00:03,051 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 48 [2020-10-27 15:00:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:03,053 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-10-27 15:00:03,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 15:00:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-10-27 15:00:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 15:00:03,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:03,059 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:03,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:00:03,060 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:03,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1194620523, now seen corresponding path program 7 times [2020-10-27 15:00:03,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:03,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486211548] [2020-10-27 15:00:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:00:05,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2378 [2020-10-27 15:00:05,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:00:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:00:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:00:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:00:05,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 15:00:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:05,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:05,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:05,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:00:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:05,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:05,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:00:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:05,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:05,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:05,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:00:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:05,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:00:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:05,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:05,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:05,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 15:00:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:05,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:05,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:00:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:05,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:05,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:05,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:05,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:05,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 15:00:05,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486211548] [2020-10-27 15:00:05,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:05,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 15:00:05,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867516551] [2020-10-27 15:00:05,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 15:00:05,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 15:00:05,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:00:05,862 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 14 states. [2020-10-27 15:00:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:06,826 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-10-27 15:00:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 15:00:06,827 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-27 15:00:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:06,829 INFO L225 Difference]: With dead ends: 67 [2020-10-27 15:00:06,829 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 15:00:06,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2020-10-27 15:00:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 15:00:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-27 15:00:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-27 15:00:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2020-10-27 15:00:06,848 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 54 [2020-10-27 15:00:06,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:06,848 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2020-10-27 15:00:06,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 15:00:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2020-10-27 15:00:06,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 15:00:06,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:06,850 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:06,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:00:06,850 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:06,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:06,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1229077814, now seen corresponding path program 8 times [2020-10-27 15:00:06,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:06,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131529917] [2020-10-27 15:00:06,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:07,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 15:00:07,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-27 15:00:07,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:07,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 15:00:07,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:00:07,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 15:00:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:08,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:00:08,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 15:00:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:00:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:08,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:00:08,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:00:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:08,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:08,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:08,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:08,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:00:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:08,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:00:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:08,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:08,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:08,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 15:00:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:00:08,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:00:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:08,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:08,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:00:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:08,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:08,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 15:00:08,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131529917] [2020-10-27 15:00:08,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:08,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 15:00:08,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255831029] [2020-10-27 15:00:08,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 15:00:08,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:08,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 15:00:08,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:00:08,231 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 15 states. [2020-10-27 15:00:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:11,574 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-10-27 15:00:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 15:00:11,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-27 15:00:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:11,576 INFO L225 Difference]: With dead ends: 73 [2020-10-27 15:00:11,576 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 15:00:11,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:00:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 15:00:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-27 15:00:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 15:00:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2020-10-27 15:00:11,601 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 60 [2020-10-27 15:00:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:11,601 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2020-10-27 15:00:11,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 15:00:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2020-10-27 15:00:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 15:00:11,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:11,606 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:11,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:00:11,606 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:11,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:11,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1769075735, now seen corresponding path program 9 times [2020-10-27 15:00:11,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:11,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859373283] [2020-10-27 15:00:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 15:00:16,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4442 [2020-10-27 15:00:16,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:00:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:00:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 15:00:16,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:16,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:16,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 15:00:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:16,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:00:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:00:16,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:00:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:00:16,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:00:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:00:16,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:00:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:00:16,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 15:00:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:16,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:00:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:00:16,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:00:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:00:16,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 15:00:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:16,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:16,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:00:16,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:16,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 18 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-27 15:00:16,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859373283] [2020-10-27 15:00:16,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:16,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 15:00:16,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082689177] [2020-10-27 15:00:16,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 15:00:16,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:16,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 15:00:16,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:00:16,650 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 16 states. [2020-10-27 15:00:20,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:20,034 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-10-27 15:00:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 15:00:20,034 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-27 15:00:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:20,036 INFO L225 Difference]: With dead ends: 79 [2020-10-27 15:00:20,036 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 15:00:20,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2020-10-27 15:00:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 15:00:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-27 15:00:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 15:00:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2020-10-27 15:00:20,054 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 66 [2020-10-27 15:00:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:20,055 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2020-10-27 15:00:20,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 15:00:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2020-10-27 15:00:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 15:00:20,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:20,057 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:20,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:00:20,058 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:20,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1764016584, now seen corresponding path program 10 times [2020-10-27 15:00:20,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:20,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882079180] [2020-10-27 15:00:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 15:00:25,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-27 15:00:25,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 15:00:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:00:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 15:00:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:25,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:25,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:25,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 15:00:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:25,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:00:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:25,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:00:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:25,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:00:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:25,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:00:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:25,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 15:00:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:25,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:00:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:00:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:25,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 15:00:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:25,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:00:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:25,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:25,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:25,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:25,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:25,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 20 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-27 15:00:25,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882079180] [2020-10-27 15:00:25,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:25,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:00:25,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060975302] [2020-10-27 15:00:25,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:00:25,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:25,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:00:25,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:00:25,822 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 17 states. [2020-10-27 15:00:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:31,321 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-10-27 15:00:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:00:31,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2020-10-27 15:00:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:31,324 INFO L225 Difference]: With dead ends: 85 [2020-10-27 15:00:31,324 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 15:00:31,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2020-10-27 15:00:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 15:00:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-27 15:00:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 15:00:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-10-27 15:00:31,344 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 72 [2020-10-27 15:00:31,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:31,345 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-10-27 15:00:31,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:00:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-10-27 15:00:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 15:00:31,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:31,349 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:31,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:00:31,350 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1336759399, now seen corresponding path program 11 times [2020-10-27 15:00:31,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:31,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745983863] [2020-10-27 15:00:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:31,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 15:00:37,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5976 [2020-10-27 15:00:37,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 15:00:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:00:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 15:00:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:37,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:37,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:37,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 15:00:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:37,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:00:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:00:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:37,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:00:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:37,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:00:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:37,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 15:00:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:37,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:00:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:37,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:00:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:37,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 15:00:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:37,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:00:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:00:37,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 15:00:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:37,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:00:37,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:37,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:37,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:37,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:37,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:00:37,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 22 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-27 15:00:37,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745983863] [2020-10-27 15:00:37,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:37,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 15:00:37,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950938919] [2020-10-27 15:00:37,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 15:00:37,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:37,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 15:00:37,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-27 15:00:37,927 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 18 states. [2020-10-27 15:00:41,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:41,594 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-10-27 15:00:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 15:00:41,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-10-27 15:00:41,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:41,596 INFO L225 Difference]: With dead ends: 91 [2020-10-27 15:00:41,597 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 15:00:41,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 15:00:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 15:00:41,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-27 15:00:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 15:00:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2020-10-27 15:00:41,620 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 78 [2020-10-27 15:00:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:41,620 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2020-10-27 15:00:41,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 15:00:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2020-10-27 15:00:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 15:00:41,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:41,622 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:41,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:00:41,622 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:41,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1493119942, now seen corresponding path program 12 times [2020-10-27 15:00:41,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:41,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159895051] [2020-10-27 15:00:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 15:01:24,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42490 [2020-10-27 15:01:24,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 15:01:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:01:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 15:01:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:24,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 15:01:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:24,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:01:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:24,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 15:01:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 15:01:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 15:01:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:24,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:01:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:01:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 15:01:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:24,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 15:01:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 15:01:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 15:01:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:24,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:24,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:01:24,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:24,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-27 15:01:24,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159895051] [2020-10-27 15:01:24,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:24,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 15:01:24,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533034877] [2020-10-27 15:01:24,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 15:01:24,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 15:01:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:01:24,737 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2020-10-27 15:01:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:30,529 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2020-10-27 15:01:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 15:01:30,530 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2020-10-27 15:01:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:30,532 INFO L225 Difference]: With dead ends: 97 [2020-10-27 15:01:30,532 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 15:01:30,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=106, Invalid=1154, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 15:01:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 15:01:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-27 15:01:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 15:01:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2020-10-27 15:01:30,553 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 84 [2020-10-27 15:01:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:30,553 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2020-10-27 15:01:30,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 15:01:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2020-10-27 15:01:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 15:01:30,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:30,556 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:30,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:01:30,557 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1868705819, now seen corresponding path program 13 times [2020-10-27 15:01:30,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:30,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372090967] [2020-10-27 15:01:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking...