/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/array-cav19/array_min_and_copy_shift_sum_add.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:15:18,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:15:18,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:15:18,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:15:18,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:15:18,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:15:18,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:15:18,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:15:18,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:15:18,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:15:18,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:15:18,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:15:18,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:15:18,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:15:18,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:15:18,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:15:18,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:15:18,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:15:18,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:15:18,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:15:18,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:15:18,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:15:18,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:15:18,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:15:18,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:15:18,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:15:18,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:15:18,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:15:18,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:15:18,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 03:15:18,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:15:18,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:15:18,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:15:18,821 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 [2020-10-29 03:15:18,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:15:18,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:15:18,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:15:18,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:15:18,874 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:15:18,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:15:18,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:15:18,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:15:18,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:15:18,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:15:18,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:15:18,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:15:18,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:15:18,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:15:18,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:15:18,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:15:18,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:15:18,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:15:18,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:15:18,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:15:18,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:15:18,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:15:18,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:15:18,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:15:18,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:15:18,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:15:18,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:15:18,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:15:18,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:15:18,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:15:19,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:15:19,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:15:19,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:15:19,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:15:19,306 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:15:19,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-29 03:15:19,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cb43b05d/0ab93791515d43f1b0698e9d709758ba/FLAG81982fb9f [2020-10-29 03:15:19,976 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:15:19,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-29 03:15:19,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cb43b05d/0ab93791515d43f1b0698e9d709758ba/FLAG81982fb9f [2020-10-29 03:15:20,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cb43b05d/0ab93791515d43f1b0698e9d709758ba [2020-10-29 03:15:20,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:15:20,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:15:20,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:15:20,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:15:20,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dd1ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20, skipping insertion in model container [2020-10-29 03:15:20,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:15:20,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:15:20,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:15:20,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,649 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:15:20,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20 WrapperNode [2020-10-29 03:15:20,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:15:20,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:15:20,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:15:20,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:15:20,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:15:20,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (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 [2020-10-29 03:15:20,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:15:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:15:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:15:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:15:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:15:20,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:15:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:15:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:15:20,852 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:15:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:15:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:15:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:15:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:15:20,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:15:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:15:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:15:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:15:20,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:15:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:15:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:15:21,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:15:21,483 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:15:21,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:21 BoogieIcfgContainer [2020-10-29 03:15:21,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:15:21,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:15:21,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:15:21,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:15:21,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:15:20" (1/3) ... [2020-10-29 03:15:21,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc6dd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:21, skipping insertion in model container [2020-10-29 03:15:21,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (2/3) ... [2020-10-29 03:15:21,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc6dd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:21, skipping insertion in model container [2020-10-29 03:15:21,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:21" (3/3) ... [2020-10-29 03:15:21,500 INFO L111 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2020-10-29 03:15:21,514 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:15:21,525 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:15:21,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:15:21,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:15:21,586 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:15:21,586 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:15:21,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:15:21,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:15:21,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:15:21,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:15:21,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:15:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-29 03:15:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:15:21,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:21,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:21,625 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:21,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1452015039, now seen corresponding path program 1 times [2020-10-29 03:15:21,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:21,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844910807] [2020-10-29 03:15:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:15:22,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:15:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-29 03:15:22,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:15:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:15:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 03:15:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:15:22,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:22,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:15:22,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 03:15:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:22,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 03:15:22,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:15:22,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844910807] [2020-10-29 03:15:22,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:22,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:15:22,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086969739] [2020-10-29 03:15:22,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:15:22,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:22,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:15:22,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:22,923 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2020-10-29 03:15:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:23,513 INFO L93 Difference]: Finished difference Result 83 states and 113 transitions. [2020-10-29 03:15:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:15:23,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-29 03:15:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:23,528 INFO L225 Difference]: With dead ends: 83 [2020-10-29 03:15:23,528 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 03:15:23,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:15:23,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 03:15:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-29 03:15:23,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:15:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-29 03:15:23,606 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2020-10-29 03:15:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:23,607 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-29 03:15:23,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:15:23,607 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-29 03:15:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:15:23,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:23,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:23,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:15:23,610 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:23,612 INFO L82 PathProgramCache]: Analyzing trace with hash -74983421, now seen corresponding path program 1 times [2020-10-29 03:15:23,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:23,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762250407] [2020-10-29 03:15:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:24,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:15:24,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-29 03:15:24,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:24,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:15:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:15:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:24,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:24,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:15:24,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:24,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:24,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:24,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:24,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:24,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:24,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:24,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:24,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:24,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:15:24,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762250407] [2020-10-29 03:15:24,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:15:24,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:15:24,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598309516] [2020-10-29 03:15:24,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:15:24,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:24,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:15:24,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:24,442 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-29 03:15:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:24,772 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2020-10-29 03:15:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:15:24,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 03:15:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:24,774 INFO L225 Difference]: With dead ends: 58 [2020-10-29 03:15:24,775 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:15:24,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:15:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:15:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-10-29 03:15:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:15:24,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-29 03:15:24,788 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 30 [2020-10-29 03:15:24,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:24,789 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-29 03:15:24,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:15:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-29 03:15:24,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:15:24,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:24,791 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:24,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:15:24,791 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:24,792 INFO L82 PathProgramCache]: Analyzing trace with hash 366967093, now seen corresponding path program 1 times [2020-10-29 03:15:24,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:24,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211439731] [2020-10-29 03:15:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:24,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:25,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:27,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:28,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:15:28,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:15:28,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3249 [2020-10-29 03:15:28,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:28,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:15:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:15:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:28,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:28,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:28,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:15:28,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:28,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:15:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:28,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:28,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:28,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:28,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:28,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:28,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:28,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:28,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:28,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:15:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:28,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:28,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:28,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:28,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:28,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:15:28,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211439731] [2020-10-29 03:15:28,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:28,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:15:28,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35318645] [2020-10-29 03:15:28,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:15:28,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:28,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:15:28,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:15:28,731 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 11 states. [2020-10-29 03:15:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:29,645 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-10-29 03:15:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:15:29,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-29 03:15:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:29,649 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:15:29,649 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:15:29,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:15:29,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:15:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-10-29 03:15:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:15:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2020-10-29 03:15:29,674 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 42 [2020-10-29 03:15:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:29,677 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2020-10-29 03:15:29,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:15:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-10-29 03:15:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:15:29,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:29,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:29,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:15:29,682 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:29,684 INFO L82 PathProgramCache]: Analyzing trace with hash -654101261, now seen corresponding path program 1 times [2020-10-29 03:15:29,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:29,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247399843] [2020-10-29 03:15:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:32,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:32,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:15:32,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:15:32,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3042 [2020-10-29 03:15:32,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:32,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:15:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:15:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:33,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:33,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:33,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:33,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:15:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:33,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:33,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:33,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:33,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:15:33,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:33,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:15:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:33,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:33,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:33,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:33,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:33,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:15:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:15:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:33,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:15:33,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247399843] [2020-10-29 03:15:33,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:33,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:15:33,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985519546] [2020-10-29 03:15:33,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:15:33,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:33,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:15:33,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:15:33,142 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 12 states. [2020-10-29 03:15:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:33,730 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2020-10-29 03:15:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:15:33,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-29 03:15:33,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:33,733 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:15:33,733 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:15:33,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:15:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:15:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2020-10-29 03:15:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:15:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2020-10-29 03:15:33,746 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 42 [2020-10-29 03:15:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:33,746 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2020-10-29 03:15:33,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:15:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-10-29 03:15:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:15:33,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:33,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:33,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:15:33,749 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:33,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:33,749 INFO L82 PathProgramCache]: Analyzing trace with hash -754832841, now seen corresponding path program 2 times [2020-10-29 03:15:33,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:33,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148762387] [2020-10-29 03:15:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:33,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:33,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:15:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:15:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1544 [2020-10-29 03:15:35,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:15:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:15:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:35,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:35,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:35,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:35,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:35,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:35,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:15:35,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:35,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:35,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:35,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:15:35,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:15:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:35,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:35,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:35,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:35,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:35,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:15:35,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148762387] [2020-10-29 03:15:35,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:35,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:15:35,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812533010] [2020-10-29 03:15:35,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:15:35,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:35,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:15:35,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:15:35,798 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 17 states. [2020-10-29 03:15:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:36,539 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2020-10-29 03:15:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:15:36,540 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-29 03:15:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:36,543 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:15:36,543 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 03:15:36,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:15:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 03:15:36,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2020-10-29 03:15:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:15:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-29 03:15:36,563 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 44 [2020-10-29 03:15:36,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:36,564 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-29 03:15:36,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:15:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-29 03:15:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:15:36,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:36,568 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:36,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:15:36,569 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:36,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:36,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2140094967, now seen corresponding path program 3 times [2020-10-29 03:15:36,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:36,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155111655] [2020-10-29 03:15:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:36,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:36,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:39,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:15:39,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:15:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2911 [2020-10-29 03:15:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:39,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:15:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:15:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:39,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:39,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:39,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:15:39,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:39,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:39,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:39,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:39,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:39,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:39,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:15:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:39,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:39,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:39,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:15:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:39,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:15:39,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155111655] [2020-10-29 03:15:39,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:39,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:15:39,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700388692] [2020-10-29 03:15:39,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:15:39,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:15:39,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:15:39,900 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 12 states. [2020-10-29 03:15:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:40,327 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2020-10-29 03:15:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:15:40,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-29 03:15:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:40,329 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:15:40,329 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:15:40,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:15:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:15:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 71. [2020-10-29 03:15:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:15:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2020-10-29 03:15:40,344 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 44 [2020-10-29 03:15:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:40,344 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2020-10-29 03:15:40,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:15:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2020-10-29 03:15:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:15:40,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:40,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:40,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:15:40,347 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:40,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1545989749, now seen corresponding path program 2 times [2020-10-29 03:15:40,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:40,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203624640] [2020-10-29 03:15:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:40,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:40,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:40,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:41,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:15:41,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:15:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-29 03:15:41,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:41,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:15:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:15:41,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:42,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:42,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:42,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:42,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:15:42,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:42,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:42,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:42,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:42,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:42,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:15:42,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:42,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:42,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:42,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:42,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:42,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:42,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:42,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:42,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:42,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:15:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:42,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:42,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:42,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:42,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:15:42,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203624640] [2020-10-29 03:15:42,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:42,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:15:42,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578745078] [2020-10-29 03:15:42,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:15:42,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:42,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:15:42,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:15:42,049 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand 17 states. [2020-10-29 03:15:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:43,351 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2020-10-29 03:15:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:15:43,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-29 03:15:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:43,353 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:15:43,353 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:15:43,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:15:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:15:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2020-10-29 03:15:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:15:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2020-10-29 03:15:43,384 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 44 [2020-10-29 03:15:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:43,385 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2020-10-29 03:15:43,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:15:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2020-10-29 03:15:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:15:43,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:43,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:43,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:15:43,390 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:43,394 INFO L82 PathProgramCache]: Analyzing trace with hash 145950261, now seen corresponding path program 3 times [2020-10-29 03:15:43,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:43,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110388657] [2020-10-29 03:15:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:46,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:15:46,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:15:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2592 [2020-10-29 03:15:46,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:46,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:15:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:15:46,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:46,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:46,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:46,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:46,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:46,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:46,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:46,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:46,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:46,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:46,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:46,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:46,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:46,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:46,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:46,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:46,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:46,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:15:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:46,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:46,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:46,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:46,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:46,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:15:46,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110388657] [2020-10-29 03:15:46,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:46,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:15:46,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880527473] [2020-10-29 03:15:46,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:15:46,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:46,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:15:46,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:15:46,414 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 13 states. [2020-10-29 03:15:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:47,045 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2020-10-29 03:15:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:15:47,045 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-29 03:15:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:47,046 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:15:47,047 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:15:47,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:15:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:15:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 57. [2020-10-29 03:15:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:15:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2020-10-29 03:15:47,059 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 44 [2020-10-29 03:15:47,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:47,060 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2020-10-29 03:15:47,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:15:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2020-10-29 03:15:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:15:47,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:47,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:47,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:15:47,062 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:47,062 INFO L82 PathProgramCache]: Analyzing trace with hash -767778119, now seen corresponding path program 4 times [2020-10-29 03:15:47,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:47,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570201858] [2020-10-29 03:15:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:47,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:48,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:48,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:15:48,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:15:48,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1491 [2020-10-29 03:15:48,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:48,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:15:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:15:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:15:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:48,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:48,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:48,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:48,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:48,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:48,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:48,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:48,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:15:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:48,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:48,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:48,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:48,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:15:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:48,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:48,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:48,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:48,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:48,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:48,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:15:48,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570201858] [2020-10-29 03:15:48,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:48,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:15:48,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154231564] [2020-10-29 03:15:48,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:15:48,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:48,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:15:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:15:48,673 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 8 states. [2020-10-29 03:15:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:48,894 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2020-10-29 03:15:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:15:48,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-29 03:15:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:48,896 INFO L225 Difference]: With dead ends: 97 [2020-10-29 03:15:48,896 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 03:15:48,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:15:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 03:15:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 62. [2020-10-29 03:15:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 03:15:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2020-10-29 03:15:48,912 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 46 [2020-10-29 03:15:48,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:48,915 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2020-10-29 03:15:48,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:15:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2020-10-29 03:15:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:15:48,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:48,920 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:48,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:15:48,921 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:48,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:48,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2038456027, now seen corresponding path program 5 times [2020-10-29 03:15:48,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:48,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984930805] [2020-10-29 03:15:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:53,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:53,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:53,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:15:53,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:15:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:15:53,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:53,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:15:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:15:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:15:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:54,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:54,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:15:54,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:54,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:54,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:54,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:54,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:15:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:54,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:54,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:15:54,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:54,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:54,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:54,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:15:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:54,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:15:54,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:54,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:15:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:54,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:54,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:54,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:54,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:54,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:15:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:54,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:54,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:54,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:54,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:54,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:54,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 03:15:54,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984930805] [2020-10-29 03:15:54,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:54,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:15:54,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195457314] [2020-10-29 03:15:54,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:15:54,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:54,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:15:54,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:15:54,089 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand 8 states. [2020-10-29 03:15:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:54,340 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2020-10-29 03:15:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:15:54,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-29 03:15:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:54,341 INFO L225 Difference]: With dead ends: 71 [2020-10-29 03:15:54,342 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:15:54,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:15:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:15:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 45. [2020-10-29 03:15:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:15:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-29 03:15:54,359 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 52 [2020-10-29 03:15:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:54,359 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-29 03:15:54,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:15:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-29 03:15:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:15:54,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:54,360 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:54,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:15:54,360 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:54,361 INFO L82 PathProgramCache]: Analyzing trace with hash -481461655, now seen corresponding path program 6 times [2020-10-29 03:15:54,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:54,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352953229] [2020-10-29 03:15:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:56,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:59,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:59,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:15:59,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 03:15:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:15:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:59,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:15:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 03:15:59,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:00,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:00,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:00,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:00,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:16:00,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:00,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:00,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:00,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:00,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:00,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:00,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:00,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:00,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:00,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:00,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:00,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:00,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:00,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:00,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:00,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:00,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:00,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:16:00,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352953229] [2020-10-29 03:16:00,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:00,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:16:00,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637955441] [2020-10-29 03:16:00,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:16:00,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:00,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:16:00,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:16:00,101 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 19 states. [2020-10-29 03:16:01,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:01,172 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2020-10-29 03:16:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:16:01,172 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-10-29 03:16:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:01,173 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:16:01,173 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 03:16:01,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:16:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 03:16:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-10-29 03:16:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:16:01,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-10-29 03:16:01,197 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 56 [2020-10-29 03:16:01,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:01,197 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-10-29 03:16:01,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:16:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-10-29 03:16:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:16:01,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:01,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:01,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:16:01,200 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1299110105, now seen corresponding path program 1 times [2020-10-29 03:16:01,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:01,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303981665] [2020-10-29 03:16:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:02,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:03,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:04,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4591 [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 03:16:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:06,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:06,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:06,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:06,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:06,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:06,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:06,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:06,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:06,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:06,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:06,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:06,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:06,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:06,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:06,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:06,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:06,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:06,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:06,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:06,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:06,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:06,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:06,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:06,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:06,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:06,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:16:06,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303981665] [2020-10-29 03:16:06,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:06,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:16:06,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351162100] [2020-10-29 03:16:06,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:16:06,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:06,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:16:06,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:16:06,600 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 19 states. [2020-10-29 03:16:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:07,782 INFO L93 Difference]: Finished difference Result 96 states and 119 transitions. [2020-10-29 03:16:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:16:07,783 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-10-29 03:16:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:07,785 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:16:07,785 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:16:07,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:16:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:16:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2020-10-29 03:16:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:16:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-10-29 03:16:07,813 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 56 [2020-10-29 03:16:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:07,813 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-10-29 03:16:07,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:16:07,813 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-10-29 03:16:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:16:07,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:07,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:07,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:16:07,815 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:07,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:07,815 INFO L82 PathProgramCache]: Analyzing trace with hash -458829401, now seen corresponding path program 2 times [2020-10-29 03:16:07,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:07,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949054822] [2020-10-29 03:16:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:10,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:16:10,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 03:16:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3107 [2020-10-29 03:16:10,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:10,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:16:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:16:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 03:16:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:11,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:11,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:11,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:11,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:11,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:11,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:11,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:11,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:11,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:11,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:11,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:11,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:11,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:11,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:16:11,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949054822] [2020-10-29 03:16:11,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:11,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:16:11,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977870722] [2020-10-29 03:16:11,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:16:11,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:11,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:16:11,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:16:11,942 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 20 states. [2020-10-29 03:16:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:13,322 INFO L93 Difference]: Finished difference Result 119 states and 149 transitions. [2020-10-29 03:16:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:16:13,322 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2020-10-29 03:16:13,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:13,324 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:16:13,324 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:16:13,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:16:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:16:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 82. [2020-10-29 03:16:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 03:16:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2020-10-29 03:16:13,341 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 56 [2020-10-29 03:16:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:13,341 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2020-10-29 03:16:13,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:16:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2020-10-29 03:16:13,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:16:13,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:13,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:13,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:16:13,343 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:13,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1276477851, now seen corresponding path program 4 times [2020-10-29 03:16:13,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:13,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753173677] [2020-10-29 03:16:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:13,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:15,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:15,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:16,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:16:16,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 03:16:16,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3089 [2020-10-29 03:16:16,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:16,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:16:16,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:16:16,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 03:16:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:17,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:17,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:17,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:17,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:17,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:16:17,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753173677] [2020-10-29 03:16:17,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:17,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:16:17,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083135302] [2020-10-29 03:16:17,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:16:17,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:17,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:16:17,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:16:17,281 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand 20 states. [2020-10-29 03:16:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:18,375 INFO L93 Difference]: Finished difference Result 122 states and 154 transitions. [2020-10-29 03:16:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:16:18,375 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2020-10-29 03:16:18,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:18,377 INFO L225 Difference]: With dead ends: 122 [2020-10-29 03:16:18,377 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:16:18,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:16:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:16:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-10-29 03:16:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:16:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-10-29 03:16:18,395 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 56 [2020-10-29 03:16:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:18,395 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-10-29 03:16:18,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:16:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-10-29 03:16:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:16:18,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:18,396 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:18,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:16:18,397 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:18,397 INFO L82 PathProgramCache]: Analyzing trace with hash -51073429, now seen corresponding path program 7 times [2020-10-29 03:16:18,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:18,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614144315] [2020-10-29 03:16:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:19,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:19,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:19,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:20,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:20,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:16:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:16:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3624 [2020-10-29 03:16:22,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:22,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:16:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:16:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:16:22,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:22,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:22,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:22,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:16:22,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:22,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:22,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:22,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:22,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:22,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:22,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:22,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:22,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:22,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:22,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:22,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:22,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:22,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:22,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:22,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:22,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:22,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:22,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:22,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:22,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:16:22,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614144315] [2020-10-29 03:16:22,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:22,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:16:22,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265042653] [2020-10-29 03:16:22,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:16:22,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:22,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:16:22,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:16:22,171 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 10 states. [2020-10-29 03:16:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:22,563 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2020-10-29 03:16:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:16:22,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-29 03:16:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:22,567 INFO L225 Difference]: With dead ends: 147 [2020-10-29 03:16:22,567 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:16:22,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:16:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:16:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 90. [2020-10-29 03:16:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:16:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2020-10-29 03:16:22,594 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 58 [2020-10-29 03:16:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:22,594 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2020-10-29 03:16:22,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:16:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2020-10-29 03:16:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:16:22,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:22,595 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:22,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:16:22,596 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:22,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1724972633, now seen corresponding path program 8 times [2020-10-29 03:16:22,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:22,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867686696] [2020-10-29 03:16:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:22,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:23,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:16:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-29 03:16:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:16:27,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:27,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:16:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:16:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:16:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:27,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:27,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:27,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:27,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:27,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:27,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:27,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:27,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:27,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:27,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:27,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:27,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:27,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:27,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:27,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:27,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:27,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:27,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:27,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:27,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:27,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:27,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:27,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:27,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:27,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:16:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:27,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:27,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:27,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:27,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-29 03:16:27,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867686696] [2020-10-29 03:16:27,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:27,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:16:27,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619496557] [2020-10-29 03:16:27,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:16:27,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:27,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:16:27,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:16:27,784 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand 10 states. [2020-10-29 03:16:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:28,179 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2020-10-29 03:16:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:16:28,180 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-29 03:16:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:28,181 INFO L225 Difference]: With dead ends: 101 [2020-10-29 03:16:28,181 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:16:28,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:16:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:16:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 55. [2020-10-29 03:16:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:16:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-10-29 03:16:28,199 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 66 [2020-10-29 03:16:28,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:28,199 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-10-29 03:16:28,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:16:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-10-29 03:16:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:16:28,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:28,202 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:28,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:16:28,203 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:28,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2087047779, now seen corresponding path program 9 times [2020-10-29 03:16:28,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:28,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404205478] [2020-10-29 03:16:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:30,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:33,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:33,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:16:33,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:16:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 03:16:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:33,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:16:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:16:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:16:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:34,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:34,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:34,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:34,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:34,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:34,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:34,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:34,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:34,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:34,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:34,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:34,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:34,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:34,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:34,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:34,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:34,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:34,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:34,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:34,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:34,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:34,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:34,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:16:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:34,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:34,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:16:34,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:34,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:34,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:34,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:16:34,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404205478] [2020-10-29 03:16:34,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:34,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:16:34,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146084964] [2020-10-29 03:16:34,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:16:34,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:34,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:16:34,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:16:34,743 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 26 states. [2020-10-29 03:16:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:36,823 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2020-10-29 03:16:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:16:36,823 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 70 [2020-10-29 03:16:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:36,825 INFO L225 Difference]: With dead ends: 101 [2020-10-29 03:16:36,825 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 03:16:36,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:16:36,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 03:16:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2020-10-29 03:16:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:16:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-10-29 03:16:36,844 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 70 [2020-10-29 03:16:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:36,844 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-10-29 03:16:36,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:16:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-10-29 03:16:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:16:36,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:36,846 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:36,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:16:36,846 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:36,847 INFO L82 PathProgramCache]: Analyzing trace with hash 2073906011, now seen corresponding path program 3 times [2020-10-29 03:16:36,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:36,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408317531] [2020-10-29 03:16:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:37,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:41,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:16:41,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:16:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:16:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:41,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:16:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:16:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:16:41,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:43,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:43,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:43,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:43,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:43,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:43,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:43,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:43,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:43,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:43,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:43,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:43,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:43,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:43,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:43,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:43,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:43,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:43,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:43,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:43,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:43,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:43,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:16:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:43,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:43,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:43,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:43,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:43,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:43,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:16:43,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408317531] [2020-10-29 03:16:43,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:43,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:16:43,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995097882] [2020-10-29 03:16:43,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:16:43,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:43,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:16:43,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:16:43,244 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand 26 states. [2020-10-29 03:16:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:45,598 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2020-10-29 03:16:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:16:45,601 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 70 [2020-10-29 03:16:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:45,602 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:16:45,602 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:16:45,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:16:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:16:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2020-10-29 03:16:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:16:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-10-29 03:16:45,627 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 70 [2020-10-29 03:16:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:45,628 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-10-29 03:16:45,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:16:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-10-29 03:16:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:16:45,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:45,629 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:45,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:16:45,629 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:45,630 INFO L82 PathProgramCache]: Analyzing trace with hash -36063781, now seen corresponding path program 4 times [2020-10-29 03:16:45,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:45,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417368782] [2020-10-29 03:16:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:47,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:48,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:50,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:50,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:16:50,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:16:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:16:50,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:50,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:16:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:16:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:16:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:52,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:52,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:16:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:16:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:52,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:52,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:16:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:52,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:16:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:52,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:16:52,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417368782] [2020-10-29 03:16:52,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:52,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:16:52,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425654653] [2020-10-29 03:16:52,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:16:52,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:52,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:16:52,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:16:52,158 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand 26 states. [2020-10-29 03:16:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:54,318 INFO L93 Difference]: Finished difference Result 124 states and 156 transitions. [2020-10-29 03:16:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:16:54,319 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 70 [2020-10-29 03:16:54,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:54,321 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:16:54,321 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:16:54,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=153, Invalid=1487, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:16:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:16:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 90. [2020-10-29 03:16:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:16:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2020-10-29 03:16:54,342 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 70 [2020-10-29 03:16:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:54,343 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2020-10-29 03:16:54,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:16:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2020-10-29 03:16:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:16:54,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:54,344 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:54,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:16:54,344 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:54,345 INFO L82 PathProgramCache]: Analyzing trace with hash -170077287, now seen corresponding path program 5 times [2020-10-29 03:16:54,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:54,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741131784] [2020-10-29 03:16:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:55,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:59,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:16:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:17:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:00,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:00,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:00,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:17:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:17:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:00,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:00,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:00,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:00,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:00,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:00,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:17:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:00,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:00,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:00,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:00,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:17:00,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741131784] [2020-10-29 03:17:00,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:00,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:17:00,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733221278] [2020-10-29 03:17:00,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:17:00,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:00,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:17:00,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:17:00,838 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand 26 states. [2020-10-29 03:17:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:03,169 INFO L93 Difference]: Finished difference Result 124 states and 156 transitions. [2020-10-29 03:17:03,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:17:03,170 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 70 [2020-10-29 03:17:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:03,172 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:17:03,172 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:17:03,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:17:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:17:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 84. [2020-10-29 03:17:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:17:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-10-29 03:17:03,192 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 70 [2020-10-29 03:17:03,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:03,192 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-10-29 03:17:03,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:17:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-10-29 03:17:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:17:03,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:03,193 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:03,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:17:03,193 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash 158531675, now seen corresponding path program 6 times [2020-10-29 03:17:03,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:03,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020155461] [2020-10-29 03:17:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:03,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:03,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:17:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:10,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:10,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:17:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:10,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:17:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:17:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:10,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:17:10,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:10,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:17:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:10,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:10,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:10,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:17:10,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020155461] [2020-10-29 03:17:10,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:10,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:17:10,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498700567] [2020-10-29 03:17:10,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:17:10,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:10,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:17:10,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:17:10,126 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand 27 states. [2020-10-29 03:17:12,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:12,925 INFO L93 Difference]: Finished difference Result 155 states and 195 transitions. [2020-10-29 03:17:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:17:12,925 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 70 [2020-10-29 03:17:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:12,927 INFO L225 Difference]: With dead ends: 155 [2020-10-29 03:17:12,927 INFO L226 Difference]: Without dead ends: 149 [2020-10-29 03:17:12,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=184, Invalid=1886, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:17:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-29 03:17:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 90. [2020-10-29 03:17:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:17:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2020-10-29 03:17:12,945 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 70 [2020-10-29 03:17:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:12,945 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2020-10-29 03:17:12,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:17:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2020-10-29 03:17:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:17:12,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:12,947 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:12,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:17:12,947 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash 24518169, now seen corresponding path program 7 times [2020-10-29 03:17:12,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:12,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672137068] [2020-10-29 03:17:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:13,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:15,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:17,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:17:17,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:17:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:17:17,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:17,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:17:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:17:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:17:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:19,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:17:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:19,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:17:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:19,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:19,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:17:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:19,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:19,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:19,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:17:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:19,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:19,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:17:19,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672137068] [2020-10-29 03:17:19,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:19,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:17:19,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27855567] [2020-10-29 03:17:19,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:17:19,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:19,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:17:19,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:17:19,615 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand 27 states. [2020-10-29 03:17:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:22,032 INFO L93 Difference]: Finished difference Result 153 states and 193 transitions. [2020-10-29 03:17:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:17:22,036 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 70 [2020-10-29 03:17:22,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:22,037 INFO L225 Difference]: With dead ends: 153 [2020-10-29 03:17:22,037 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 03:17:22,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:17:22,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 03:17:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 84. [2020-10-29 03:17:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:17:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2020-10-29 03:17:22,060 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 70 [2020-10-29 03:17:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:22,060 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2020-10-29 03:17:22,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:17:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2020-10-29 03:17:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:17:22,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:22,061 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:22,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:17:22,062 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:22,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2085451623, now seen corresponding path program 8 times [2020-10-29 03:17:22,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:22,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026336144] [2020-10-29 03:17:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:26,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:27,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:27,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:17:27,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:17:27,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 03:17:27,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:27,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:17:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:17:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:17:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:17:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:28,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:28,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:28,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:28,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:28,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:17:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:17:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:17:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:28,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:28,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:28,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:28,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:28,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:17:28,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026336144] [2020-10-29 03:17:28,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:28,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:17:28,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211479106] [2020-10-29 03:17:28,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:17:28,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:28,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:17:28,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:17:28,800 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand 27 states. [2020-10-29 03:17:31,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:31,409 INFO L93 Difference]: Finished difference Result 147 states and 184 transitions. [2020-10-29 03:17:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:17:31,410 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 70 [2020-10-29 03:17:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:31,412 INFO L225 Difference]: With dead ends: 147 [2020-10-29 03:17:31,412 INFO L226 Difference]: Without dead ends: 141 [2020-10-29 03:17:31,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=184, Invalid=1886, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:17:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-29 03:17:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 88. [2020-10-29 03:17:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 03:17:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2020-10-29 03:17:31,434 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 70 [2020-10-29 03:17:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:31,434 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2020-10-29 03:17:31,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:17:31,434 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2020-10-29 03:17:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:17:31,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:31,435 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:31,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:17:31,436 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:31,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2075502167, now seen corresponding path program 5 times [2020-10-29 03:17:31,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:31,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431018407] [2020-10-29 03:17:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:31,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:32,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:33,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:34,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:17:36,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:17:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-29 03:17:36,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:17:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:17:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:17:36,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:38,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:38,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:38,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:17:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:38,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:38,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:38,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:38,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:38,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:38,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:38,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:17:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:38,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:38,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:38,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:38,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:17:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:38,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:38,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:38,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:38,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:38,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:38,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:17:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:38,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:38,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:38,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:38,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:38,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:17:38,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431018407] [2020-10-29 03:17:38,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:38,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:17:38,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639271892] [2020-10-29 03:17:38,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:17:38,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:38,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:17:38,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:17:38,517 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand 27 states. [2020-10-29 03:17:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:41,153 INFO L93 Difference]: Finished difference Result 127 states and 159 transitions. [2020-10-29 03:17:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:17:41,154 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 70 [2020-10-29 03:17:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:41,156 INFO L225 Difference]: With dead ends: 127 [2020-10-29 03:17:41,156 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 03:17:41,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:17:41,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 03:17:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2020-10-29 03:17:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:17:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-10-29 03:17:41,175 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 70 [2020-10-29 03:17:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:41,175 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-10-29 03:17:41,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:17:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-10-29 03:17:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:17:41,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:41,177 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:41,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:17:41,177 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:41,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:41,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1126079329, now seen corresponding path program 10 times [2020-10-29 03:17:41,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:41,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998315775] [2020-10-29 03:17:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:41,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:41,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:46,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:17:46,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:17:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:17:46,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:46,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:17:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:17:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:17:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:46,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:46,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:46,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:46,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:17:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:46,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:46,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:46,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:46,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:46,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:17:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:46,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:17:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:46,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:46,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:46,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:46,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:46,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:46,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:46,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:46,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:46,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:46,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:46,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:17:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 03:17:46,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998315775] [2020-10-29 03:17:46,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:46,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:17:46,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250535993] [2020-10-29 03:17:46,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:17:46,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:46,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:17:46,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:17:46,330 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 12 states. [2020-10-29 03:17:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:46,741 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-10-29 03:17:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:17:46,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-29 03:17:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:46,744 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:17:46,744 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:17:46,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:17:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:17:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-10-29 03:17:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:17:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2020-10-29 03:17:46,766 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 72 [2020-10-29 03:17:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:46,766 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2020-10-29 03:17:46,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:17:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2020-10-29 03:17:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:17:46,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:46,768 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:46,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:17:46,768 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:46,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1427108467, now seen corresponding path program 11 times [2020-10-29 03:17:46,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:46,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527772055] [2020-10-29 03:17:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:48,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:51,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:17:51,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 03:17:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:17:51,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:51,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:17:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:17:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:17:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:51,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:51,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:51,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:51,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:51,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:51,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:51,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:17:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:51,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:51,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:51,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:51,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:51,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:17:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:51,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:51,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:51,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:51,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:51,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:17:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:51,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:51,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:51,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:51,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:51,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:51,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:51,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:51,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:51,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:51,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:51,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:51,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:51,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:17:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:51,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:51,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:51,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:17:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:51,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:51,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:51,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:51,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 03:17:51,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527772055] [2020-10-29 03:17:51,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:51,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:17:51,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294607827] [2020-10-29 03:17:51,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:17:51,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:51,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:17:51,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:17:51,976 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand 12 states. [2020-10-29 03:17:52,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:52,576 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2020-10-29 03:17:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:17:52,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-29 03:17:52,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:52,578 INFO L225 Difference]: With dead ends: 93 [2020-10-29 03:17:52,579 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:17:52,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:17:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:17:52,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2020-10-29 03:17:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:17:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-10-29 03:17:52,592 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 80 [2020-10-29 03:17:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:52,593 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-10-29 03:17:52,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:17:52,593 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-10-29 03:17:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:17:52,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:52,594 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:52,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:17:52,594 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:52,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:52,594 INFO L82 PathProgramCache]: Analyzing trace with hash 881300177, now seen corresponding path program 12 times [2020-10-29 03:17:52,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:52,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176978738] [2020-10-29 03:17:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:52,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:52,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:57,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:57,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:17:57,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:17:57,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:17:57,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:57,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:57,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:17:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:17:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 03:17:57,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:59,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:59,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:59,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:59,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:59,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:17:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:59,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:59,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:59,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:17:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:59,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:59,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:17:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:59,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:59,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:59,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:59,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:59,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:59,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:59,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:59,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:17:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:59,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:59,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:59,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:59,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:59,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:59,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:18:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:00,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:18:00,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176978738] [2020-10-29 03:18:00,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:00,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:18:00,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271751156] [2020-10-29 03:18:00,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:18:00,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:00,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:18:00,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:18:00,043 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 36 states. [2020-10-29 03:18:03,249 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 03:18:05,337 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-29 03:18:05,577 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 03:18:05,860 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-29 03:18:06,076 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 03:18:06,298 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 03:18:07,094 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 03:18:07,362 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 03:18:08,511 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2020-10-29 03:18:09,033 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 03:18:11,178 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 03:18:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:11,826 INFO L93 Difference]: Finished difference Result 179 states and 236 transitions. [2020-10-29 03:18:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-29 03:18:11,827 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 84 [2020-10-29 03:18:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:11,828 INFO L225 Difference]: With dead ends: 179 [2020-10-29 03:18:11,829 INFO L226 Difference]: Without dead ends: 173 [2020-10-29 03:18:11,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=1109, Invalid=8593, Unknown=0, NotChecked=0, Total=9702 [2020-10-29 03:18:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-29 03:18:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 102. [2020-10-29 03:18:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 03:18:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2020-10-29 03:18:11,863 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 84 [2020-10-29 03:18:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:11,863 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2020-10-29 03:18:11,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:18:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2020-10-29 03:18:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:18:11,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:11,866 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:11,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:18:11,866 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:11,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:11,867 INFO L82 PathProgramCache]: Analyzing trace with hash 371827087, now seen corresponding path program 9 times [2020-10-29 03:18:11,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:11,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648256579] [2020-10-29 03:18:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:16,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 03:18:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,422 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-29 03:18:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:19,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:19,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:19,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:19,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:19,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:19,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:19,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:18:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:19,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:19,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:19,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:19,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:19,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:19,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:18:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:19,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:19,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:19,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:19,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:19,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:19,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:18:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:19,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:19,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:19,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:19,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:19,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:19,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:18:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:19,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:19,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:19,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:18:19,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:19,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:18:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:18:19,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:19,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:19,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:18:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:19,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:19,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:19,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:19,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:18:19,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:19,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:18:19,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648256579] [2020-10-29 03:18:19,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:19,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:18:19,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903060810] [2020-10-29 03:18:19,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:18:19,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:19,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:18:19,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:18:19,942 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand 35 states. [2020-10-29 03:18:20,847 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-10-29 03:18:22,007 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-29 03:18:23,095 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-29 03:18:24,126 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-10-29 03:18:25,108 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2020-10-29 03:18:25,580 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-10-29 03:18:25,868 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 03:18:26,053 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-29 03:18:26,624 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-29 03:18:27,363 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-10-29 03:18:28,047 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-10-29 03:18:28,361 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-29 03:18:28,779 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-29 03:18:29,720 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2020-10-29 03:18:30,509 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-10-29 03:18:30,763 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-29 03:18:32,358 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-29 03:18:32,855 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 123 [2020-10-29 03:18:33,204 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-29 03:18:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:33,395 INFO L93 Difference]: Finished difference Result 214 states and 280 transitions. [2020-10-29 03:18:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 03:18:33,397 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 84 [2020-10-29 03:18:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:33,400 INFO L225 Difference]: With dead ends: 214 [2020-10-29 03:18:33,400 INFO L226 Difference]: Without dead ends: 208 [2020-10-29 03:18:33,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=987, Invalid=5819, Unknown=0, NotChecked=0, Total=6806 [2020-10-29 03:18:33,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-29 03:18:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 102. [2020-10-29 03:18:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 03:18:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2020-10-29 03:18:33,438 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 84 [2020-10-29 03:18:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:33,438 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2020-10-29 03:18:33,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:18:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2020-10-29 03:18:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:18:33,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:33,440 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:33,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:18:33,440 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:33,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:33,441 INFO L82 PathProgramCache]: Analyzing trace with hash -148059121, now seen corresponding path program 10 times [2020-10-29 03:18:33,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:33,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322551258] [2020-10-29 03:18:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:38,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:18:38,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:18:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-29 03:18:38,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:38,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:18:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:18:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 03:18:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,981 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-29 03:18:40,124 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-29 03:18:40,327 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-29 03:18:40,486 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-29 03:18:40,657 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-29 03:18:41,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:41,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:41,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:41,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:41,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:41,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 03:18:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:41,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:41,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:41,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:41,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:41,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 03:18:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:41,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:41,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:41,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:41,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:41,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:41,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:41,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:41,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:18:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:41,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:41,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:41,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:41,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:41,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:18:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:41,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:41,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:41,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:41,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:41,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:41,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:41,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:18:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:41,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:41,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:41,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:18:41,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:41,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:41,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:41,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:18:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:41,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:41,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:41,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:41,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:18:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:41,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:18:41,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322551258] [2020-10-29 03:18:41,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:41,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:18:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348193324] [2020-10-29 03:18:41,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:18:41,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:18:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:18:41,920 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand 35 states. [2020-10-29 03:18:42,859 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-10-29 03:18:43,786 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-29 03:18:45,803 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-10-29 03:18:46,253 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-10-29 03:18:46,990 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 133 [2020-10-29 03:18:47,494 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2020-10-29 03:18:48,347 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2020-10-29 03:18:48,886 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-10-29 03:18:49,064 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 03:18:49,681 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-29 03:18:49,981 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-29 03:18:50,515 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-10-29 03:18:50,794 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 03:18:51,370 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-29 03:18:51,738 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-29 03:18:52,096 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-29 03:18:52,836 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 133 [2020-10-29 03:18:53,577 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-10-29 03:18:53,926 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 83