/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=SHALLOWEST --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-tiling/rewnifrev2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:56:09,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:56:09,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:56:09,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:56:09,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:56:09,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:56:09,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:56:09,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:56:09,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:56:09,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:56:09,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:56:09,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:56:09,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:56:09,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:56:09,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:56:09,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:56:09,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:56:09,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:56:09,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:56:09,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:56:09,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:56:09,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:56:09,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:56:09,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:56:09,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:56:09,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:56:09,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:56:09,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:56:09,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:56:09,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:56:09,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:56:09,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:56:09,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:56:09,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:56:09,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:56:09,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:56:09,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:56:09,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:56:09,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:56:09,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:56:09,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:56:09,838 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 [2020-10-26 19:56:09,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:56:09,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:56:09,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:56:09,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:56:09,868 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:56:09,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:56:09,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:56:09,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:56:09,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:56:09,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:56:09,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:56:09,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:56:09,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:56:09,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:56:09,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:56:09,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:56:09,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:56:09,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:56:09,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:56:09,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:56:09,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:56:09,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:56:09,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:56:09,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:56:09,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:56:09,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:56:09,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:56:09,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:56:09,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:56:09,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:56:10,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:56:10,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:56:10,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:56:10,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:56:10,354 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:56:10,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev2.c [2020-10-26 19:56:10,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/107dd42bd/da29f14911354deebc46ce9d12e3a4a7/FLAG96bf74842 [2020-10-26 19:56:11,066 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:56:11,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewnifrev2.c [2020-10-26 19:56:11,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/107dd42bd/da29f14911354deebc46ce9d12e3a4a7/FLAG96bf74842 [2020-10-26 19:56:11,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/107dd42bd/da29f14911354deebc46ce9d12e3a4a7 [2020-10-26 19:56:11,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:56:11,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:56:11,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:56:11,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:56:11,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:56:11,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da8912c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11, skipping insertion in model container [2020-10-26 19:56:11,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:56:11,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:56:11,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:56:11,706 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:56:11,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:56:11,750 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:56:11,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11 WrapperNode [2020-10-26 19:56:11,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:56:11,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:56:11,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:56:11,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:56:11,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (1/1) ... [2020-10-26 19:56:11,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:56:11,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:56:11,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:56:11,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:56:11,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (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 [2020-10-26 19:56:11,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:56:11,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:56:11,899 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:56:11,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:56:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:56:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:56:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:56:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:56:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:56:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:56:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:56:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:56:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:56:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:56:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:56:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:56:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:56:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:56:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:56:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:56:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:56:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:56:12,252 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:56:12,253 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:56:12,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:56:12 BoogieIcfgContainer [2020-10-26 19:56:12,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:56:12,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:56:12,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:56:12,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:56:12,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:56:11" (1/3) ... [2020-10-26 19:56:12,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4191aae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:56:12, skipping insertion in model container [2020-10-26 19:56:12,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:11" (2/3) ... [2020-10-26 19:56:12,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4191aae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:56:12, skipping insertion in model container [2020-10-26 19:56:12,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:56:12" (3/3) ... [2020-10-26 19:56:12,265 INFO L111 eAbstractionObserver]: Analyzing ICFG rewnifrev2.c [2020-10-26 19:56:12,278 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:56:12,283 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:56:12,307 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:56:12,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:56:12,362 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:56:12,362 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:56:12,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:56:12,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:56:12,363 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:56:12,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:56:12,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:56:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-26 19:56:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 19:56:12,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:12,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:12,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:12,412 INFO L82 PathProgramCache]: Analyzing trace with hash 648374376, now seen corresponding path program 1 times [2020-10-26 19:56:12,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:12,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636704782] [2020-10-26 19:56:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-26 19:56:12,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-26 19:56:12,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:12,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:56:12,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 19:56:13,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:13,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:13,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:13,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 19:56:13,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:13,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:13,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636704782] [2020-10-26 19:56:13,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:13,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:13,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512421064] [2020-10-26 19:56:13,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:13,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:13,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:13,157 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2020-10-26 19:56:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:13,340 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-26 19:56:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:13,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-26 19:56:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:13,350 INFO L225 Difference]: With dead ends: 50 [2020-10-26 19:56:13,351 INFO L226 Difference]: Without dead ends: 22 [2020-10-26 19:56:13,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-26 19:56:13,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-26 19:56:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-26 19:56:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-26 19:56:13,399 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-10-26 19:56:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:13,400 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-26 19:56:13,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-26 19:56:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 19:56:13,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:13,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:13,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:56:13,402 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:13,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1757895530, now seen corresponding path program 1 times [2020-10-26 19:56:13,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:13,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864333680] [2020-10-26 19:56:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:13,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:13,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:13,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 19:56:13,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-26 19:56:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:56:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 19:56:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:14,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:14,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:14,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:56:14,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:14,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864333680] [2020-10-26 19:56:14,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:14,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-26 19:56:14,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546196243] [2020-10-26 19:56:14,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:56:14,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:14,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:56:14,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:56:14,214 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 10 states. [2020-10-26 19:56:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:14,600 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-10-26 19:56:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 19:56:14,601 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-26 19:56:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:14,602 INFO L225 Difference]: With dead ends: 33 [2020-10-26 19:56:14,602 INFO L226 Difference]: Without dead ends: 30 [2020-10-26 19:56:14,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-26 19:56:14,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-26 19:56:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 19:56:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-26 19:56:14,614 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-10-26 19:56:14,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:14,615 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-26 19:56:14,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:56:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-26 19:56:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 19:56:14,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:14,616 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] [2020-10-26 19:56:14,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:56:14,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:14,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:14,618 INFO L82 PathProgramCache]: Analyzing trace with hash -835839597, now seen corresponding path program 1 times [2020-10-26 19:56:14,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:14,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567915216] [2020-10-26 19:56:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:14,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:14,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-26 19:56:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-26 19:56:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 19:56:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:15,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:15,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-26 19:56:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:15,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:15,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567915216] [2020-10-26 19:56:15,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:15,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:15,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141030801] [2020-10-26 19:56:15,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:15,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:15,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:15,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:15,180 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 11 states. [2020-10-26 19:56:15,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:15,599 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-10-26 19:56:15,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 19:56:15,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-26 19:56:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:15,602 INFO L225 Difference]: With dead ends: 41 [2020-10-26 19:56:15,602 INFO L226 Difference]: Without dead ends: 38 [2020-10-26 19:56:15,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:56:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-26 19:56:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-26 19:56:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 19:56:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-10-26 19:56:15,613 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 25 [2020-10-26 19:56:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:15,614 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-10-26 19:56:15,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-10-26 19:56:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-26 19:56:15,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:15,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:15,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:56:15,616 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:15,616 INFO L82 PathProgramCache]: Analyzing trace with hash -152265028, now seen corresponding path program 2 times [2020-10-26 19:56:15,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:15,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691993831] [2020-10-26 19:56:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 19:56:15,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 19:56:15,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 19:56:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 19:56:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:15,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:15,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:15,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-26 19:56:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:15,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 19:56:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:15,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:56:15,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691993831] [2020-10-26 19:56:15,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:15,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 19:56:15,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828141673] [2020-10-26 19:56:15,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 19:56:15,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:16,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 19:56:16,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:56:16,001 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2020-10-26 19:56:16,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:16,215 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-26 19:56:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 19:56:16,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-26 19:56:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:16,219 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:56:16,219 INFO L226 Difference]: Without dead ends: 39 [2020-10-26 19:56:16,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-26 19:56:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-26 19:56:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 19:56:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-26 19:56:16,230 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 33 [2020-10-26 19:56:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:16,230 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-26 19:56:16,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 19:56:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-26 19:56:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 19:56:16,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:16,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:16,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:56:16,232 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1460890306, now seen corresponding path program 3 times [2020-10-26 19:56:16,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:16,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131459937] [2020-10-26 19:56:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:16,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 19:56:16,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:16,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-26 19:56:16,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:56:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:56:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:16,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:16,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:16,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:16,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:16,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:16,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-26 19:56:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:16,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:16,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:16,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:56:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:16,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:16,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:16,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:16,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:16,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:56:16,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131459937] [2020-10-26 19:56:16,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:16,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:56:16,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733391183] [2020-10-26 19:56:16,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:56:16,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:16,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:56:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:56:16,960 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 14 states. [2020-10-26 19:56:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:17,870 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-10-26 19:56:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:56:17,871 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-26 19:56:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:17,873 INFO L225 Difference]: With dead ends: 51 [2020-10-26 19:56:17,873 INFO L226 Difference]: Without dead ends: 48 [2020-10-26 19:56:17,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:56:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-26 19:56:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-26 19:56:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 19:56:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-26 19:56:17,889 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 35 [2020-10-26 19:56:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:17,890 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-26 19:56:17,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:56:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-26 19:56:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-26 19:56:17,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:17,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:17,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:56:17,892 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:17,893 INFO L82 PathProgramCache]: Analyzing trace with hash 515260263, now seen corresponding path program 4 times [2020-10-26 19:56:17,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:17,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235761513] [2020-10-26 19:56:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 19:56:18,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-26 19:56:18,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 19:56:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:18,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:18,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:18,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-26 19:56:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:18,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:18,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:56:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:18,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:18,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:18,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 19:56:18,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235761513] [2020-10-26 19:56:18,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:18,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 19:56:18,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634769044] [2020-10-26 19:56:18,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 19:56:18,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:18,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 19:56:18,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:56:18,396 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 9 states. [2020-10-26 19:56:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:18,713 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-10-26 19:56:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 19:56:18,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-26 19:56:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:18,715 INFO L225 Difference]: With dead ends: 86 [2020-10-26 19:56:18,716 INFO L226 Difference]: Without dead ends: 49 [2020-10-26 19:56:18,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:18,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-26 19:56:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-26 19:56:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-26 19:56:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-10-26 19:56:18,727 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 43 [2020-10-26 19:56:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:18,728 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-10-26 19:56:18,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 19:56:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-10-26 19:56:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-26 19:56:18,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:18,730 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:18,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:56:18,730 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:18,731 INFO L82 PathProgramCache]: Analyzing trace with hash -35816599, now seen corresponding path program 5 times [2020-10-26 19:56:18,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:18,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193411739] [2020-10-26 19:56:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-26 19:56:19,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-26 19:56:19,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:56:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 19:56:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:19,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:19,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 19:56:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:19,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:19,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 19:56:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:19,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:19,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:19,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:19,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:19,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:19,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 19:56:19,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193411739] [2020-10-26 19:56:19,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:19,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:56:19,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041191583] [2020-10-26 19:56:19,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:56:19,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:19,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:56:19,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:56:19,969 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-10-26 19:56:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:21,115 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-10-26 19:56:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:56:21,115 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-26 19:56:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:21,119 INFO L225 Difference]: With dead ends: 61 [2020-10-26 19:56:21,119 INFO L226 Difference]: Without dead ends: 58 [2020-10-26 19:56:21,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:56:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-26 19:56:21,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-26 19:56:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-26 19:56:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-10-26 19:56:21,144 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 45 [2020-10-26 19:56:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:21,145 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-10-26 19:56:21,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:56:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-10-26 19:56:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-26 19:56:21,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:21,150 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:21,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:56:21,151 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:21,152 INFO L82 PathProgramCache]: Analyzing trace with hash -421541230, now seen corresponding path program 6 times [2020-10-26 19:56:21,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:21,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514725126] [2020-10-26 19:56:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-26 19:56:21,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 19:56:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:56:21,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:21,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 19:56:21,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:21,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 19:56:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:21,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 19:56:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:21,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 19:56:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:21,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:56:21,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514725126] [2020-10-26 19:56:21,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:21,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:56:21,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546311610] [2020-10-26 19:56:21,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:56:21,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:21,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:56:21,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:56:21,845 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 10 states. [2020-10-26 19:56:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:22,156 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-10-26 19:56:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 19:56:22,157 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-10-26 19:56:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:22,159 INFO L225 Difference]: With dead ends: 104 [2020-10-26 19:56:22,159 INFO L226 Difference]: Without dead ends: 59 [2020-10-26 19:56:22,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:56:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-26 19:56:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-26 19:56:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 19:56:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-10-26 19:56:22,181 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 53 [2020-10-26 19:56:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:22,181 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-10-26 19:56:22,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:56:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-10-26 19:56:22,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 19:56:22,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:22,184 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:22,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:56:22,185 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:22,185 INFO L82 PathProgramCache]: Analyzing trace with hash 83192852, now seen corresponding path program 7 times [2020-10-26 19:56:22,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:22,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921098821] [2020-10-26 19:56:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 19:56:23,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1245 [2020-10-26 19:56:23,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:56:23,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:23,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 19:56:23,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:23,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:23,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:23,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-26 19:56:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:23,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 19:56:23,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:23,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:23,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:23,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:23,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:23,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:23,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:56:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:23,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:23,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:23,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:56:23,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921098821] [2020-10-26 19:56:23,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:23,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:56:23,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292670932] [2020-10-26 19:56:23,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:56:23,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:23,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:56:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:23,974 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 15 states. [2020-10-26 19:56:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:25,323 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-10-26 19:56:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 19:56:25,323 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-26 19:56:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:25,325 INFO L225 Difference]: With dead ends: 71 [2020-10-26 19:56:25,325 INFO L226 Difference]: Without dead ends: 68 [2020-10-26 19:56:25,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:56:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-26 19:56:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-26 19:56:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-26 19:56:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-10-26 19:56:25,352 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 55 [2020-10-26 19:56:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:25,352 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-10-26 19:56:25,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:56:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-10-26 19:56:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-26 19:56:25,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:25,357 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:25,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:56:25,357 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash 415096893, now seen corresponding path program 8 times [2020-10-26 19:56:25,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:25,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125785246] [2020-10-26 19:56:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:25,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:25,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 19:56:25,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:25,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-26 19:56:25,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:56:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-26 19:56:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:26,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:56:26,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:26,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-26 19:56:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:56:26,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:26,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:26,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:56:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:26,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:26,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 60 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:56:26,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125785246] [2020-10-26 19:56:26,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:26,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:26,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949024617] [2020-10-26 19:56:26,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:26,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:26,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:26,260 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 11 states. [2020-10-26 19:56:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:26,674 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-10-26 19:56:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:56:26,674 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-10-26 19:56:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:26,676 INFO L225 Difference]: With dead ends: 122 [2020-10-26 19:56:26,676 INFO L226 Difference]: Without dead ends: 69 [2020-10-26 19:56:26,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:56:26,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-26 19:56:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-26 19:56:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-26 19:56:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-10-26 19:56:26,698 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 63 [2020-10-26 19:56:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:26,698 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-10-26 19:56:26,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-10-26 19:56:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-26 19:56:26,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:26,703 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:26,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:56:26,703 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:26,706 INFO L82 PathProgramCache]: Analyzing trace with hash -786364609, now seen corresponding path program 9 times [2020-10-26 19:56:26,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:26,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822467664] [2020-10-26 19:56:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:27,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 19:56:27,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-26 19:56:27,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:56:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-26 19:56:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:28,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:28,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:28,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 19:56:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:28,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-26 19:56:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:28,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:56:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:28,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:56:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:28,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:56:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 15 proven. 70 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:56:28,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822467664] [2020-10-26 19:56:28,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:28,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:56:28,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157525779] [2020-10-26 19:56:28,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:56:28,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:28,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:56:28,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:56:28,510 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 20 states. [2020-10-26 19:56:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:30,343 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-10-26 19:56:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 19:56:30,344 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-26 19:56:30,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:30,345 INFO L225 Difference]: With dead ends: 81 [2020-10-26 19:56:30,345 INFO L226 Difference]: Without dead ends: 78 [2020-10-26 19:56:30,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=266, Invalid=1374, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:56:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-26 19:56:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-26 19:56:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 19:56:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-10-26 19:56:30,366 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 65 [2020-10-26 19:56:30,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:30,369 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-10-26 19:56:30,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:56:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-10-26 19:56:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-26 19:56:30,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:30,373 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:30,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:56:30,374 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -526573464, now seen corresponding path program 10 times [2020-10-26 19:56:30,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:30,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115024406] [2020-10-26 19:56:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 19:56:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-26 19:56:31,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:56:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 19:56:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:31,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 19:56:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:31,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:31,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-26 19:56:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:31,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:56:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:31,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:31,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:56:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:31,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:56:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:31,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:56:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:31,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:31,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 63 proven. 46 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:56:31,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115024406] [2020-10-26 19:56:31,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:31,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:56:31,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610017826] [2020-10-26 19:56:31,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:56:31,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:31,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:56:31,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:31,222 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 13 states. [2020-10-26 19:56:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:31,672 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2020-10-26 19:56:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 19:56:31,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-10-26 19:56:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:31,675 INFO L225 Difference]: With dead ends: 140 [2020-10-26 19:56:31,675 INFO L226 Difference]: Without dead ends: 79 [2020-10-26 19:56:31,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:56:31,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-26 19:56:31,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-26 19:56:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 19:56:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-10-26 19:56:31,687 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 73 [2020-10-26 19:56:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:31,687 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-10-26 19:56:31,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:56:31,687 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-10-26 19:56:31,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-26 19:56:31,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:31,689 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:31,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:56:31,689 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:31,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:31,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1169888022, now seen corresponding path program 11 times [2020-10-26 19:56:31,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:31,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73143241] [2020-10-26 19:56:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 19:56:33,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1310 [2020-10-26 19:56:33,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:56:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 19:56:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:33,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:56:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:33,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:33,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:56:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:33,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:56:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:56:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:33,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:56:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:33,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:56:33,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73143241] [2020-10-26 19:56:33,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:33,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:56:33,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620761232] [2020-10-26 19:56:33,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:56:33,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:33,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:56:33,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:56:33,637 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 17 states. [2020-10-26 19:56:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:35,653 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-10-26 19:56:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 19:56:35,653 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-10-26 19:56:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:35,655 INFO L225 Difference]: With dead ends: 91 [2020-10-26 19:56:35,655 INFO L226 Difference]: Without dead ends: 88 [2020-10-26 19:56:35,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 19:56:35,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-26 19:56:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-26 19:56:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-26 19:56:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-10-26 19:56:35,667 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 75 [2020-10-26 19:56:35,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:35,668 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-10-26 19:56:35,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:56:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-10-26 19:56:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-26 19:56:35,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:35,669 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:35,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:56:35,670 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:35,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:35,670 INFO L82 PathProgramCache]: Analyzing trace with hash 935471891, now seen corresponding path program 12 times [2020-10-26 19:56:35,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:35,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565181505] [2020-10-26 19:56:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 19:56:36,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-26 19:56:36,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:56:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 19:56:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:36,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:36,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:56:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:36,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:36,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:36,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:56:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:36,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:36,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:56:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:36,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:36,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:56:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:36,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:36,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:36,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:56:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:36,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:36,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:56:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:36,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:36,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:36,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:56:36,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565181505] [2020-10-26 19:56:36,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:36,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:56:36,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560588611] [2020-10-26 19:56:36,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:56:36,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:56:36,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:36,690 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 13 states. [2020-10-26 19:56:37,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:37,225 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2020-10-26 19:56:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 19:56:37,226 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-26 19:56:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:37,227 INFO L225 Difference]: With dead ends: 158 [2020-10-26 19:56:37,227 INFO L226 Difference]: Without dead ends: 89 [2020-10-26 19:56:37,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:56:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-26 19:56:37,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-10-26 19:56:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-26 19:56:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-10-26 19:56:37,239 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 83 [2020-10-26 19:56:37,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:37,239 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-10-26 19:56:37,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:56:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-10-26 19:56:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-26 19:56:37,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:37,241 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:37,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:56:37,241 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:37,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:37,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1195228437, now seen corresponding path program 13 times [2020-10-26 19:56:37,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:37,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434383203] [2020-10-26 19:56:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 19:56:38,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1538 [2020-10-26 19:56:38,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-26 19:56:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 19:56:38,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:40,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:40,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 19:56:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:40,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:40,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 19:56:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:40,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:56:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:40,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:56:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:56:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:40,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:56:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:40,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 19:56:40,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:40,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 21 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:56:40,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434383203] [2020-10-26 19:56:40,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:40,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-26 19:56:40,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386143987] [2020-10-26 19:56:40,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-26 19:56:40,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:40,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-26 19:56:40,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:56:40,152 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 29 states. [2020-10-26 19:56:43,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:43,379 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-10-26 19:56:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-26 19:56:43,380 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 85 [2020-10-26 19:56:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:43,381 INFO L225 Difference]: With dead ends: 101 [2020-10-26 19:56:43,382 INFO L226 Difference]: Without dead ends: 98 [2020-10-26 19:56:43,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=416, Invalid=2664, Unknown=0, NotChecked=0, Total=3080 [2020-10-26 19:56:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-26 19:56:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-26 19:56:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-26 19:56:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2020-10-26 19:56:43,395 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 85 [2020-10-26 19:56:43,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:43,396 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2020-10-26 19:56:43,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-26 19:56:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2020-10-26 19:56:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-26 19:56:43,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:43,397 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:43,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:56:43,397 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:43,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:43,398 INFO L82 PathProgramCache]: Analyzing trace with hash -831938498, now seen corresponding path program 14 times [2020-10-26 19:56:43,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:43,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788261589] [2020-10-26 19:56:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 19:56:44,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-26 19:56:44,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:56:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 19:56:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:44,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:44,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 19:56:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:44,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:44,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:44,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:44,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 19:56:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:44,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:44,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:56:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:44,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:44,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:56:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:44,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:44,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:44,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:44,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:56:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:44,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:56:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:44,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:44,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:44,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:56:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:44,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 144 proven. 49 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-26 19:56:44,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788261589] [2020-10-26 19:56:44,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:44,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:56:44,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925079491] [2020-10-26 19:56:44,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:56:44,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:44,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:56:44,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:56:44,547 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 14 states. [2020-10-26 19:56:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:45,089 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2020-10-26 19:56:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 19:56:45,090 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-26 19:56:45,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:45,092 INFO L225 Difference]: With dead ends: 176 [2020-10-26 19:56:45,092 INFO L226 Difference]: Without dead ends: 99 [2020-10-26 19:56:45,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:56:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-26 19:56:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-26 19:56:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-26 19:56:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-10-26 19:56:45,105 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 93 [2020-10-26 19:56:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:45,105 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-10-26 19:56:45,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:56:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-10-26 19:56:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 19:56:45,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:45,107 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:45,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:56:45,107 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:45,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:45,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1746921536, now seen corresponding path program 15 times [2020-10-26 19:56:45,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:45,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872326644] [2020-10-26 19:56:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 19:56:47,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:47,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-26 19:56:47,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:56:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 19:56:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:48,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:48,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:56:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:48,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:56:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:56:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:56:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:56:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 24 proven. 184 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-26 19:56:48,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872326644] [2020-10-26 19:56:48,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:48,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-26 19:56:48,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139820544] [2020-10-26 19:56:48,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-26 19:56:48,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:48,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-26 19:56:48,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:56:48,579 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 30 states. [2020-10-26 19:56:50,207 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-26 19:56:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:52,063 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-10-26 19:56:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:56:52,064 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 95 [2020-10-26 19:56:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:52,066 INFO L225 Difference]: With dead ends: 111 [2020-10-26 19:56:52,066 INFO L226 Difference]: Without dead ends: 108 [2020-10-26 19:56:52,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=472, Invalid=3068, Unknown=0, NotChecked=0, Total=3540 [2020-10-26 19:56:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-26 19:56:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-26 19:56:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 19:56:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-10-26 19:56:52,081 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 95 [2020-10-26 19:56:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:52,082 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-10-26 19:56:52,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-26 19:56:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-10-26 19:56:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-26 19:56:52,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:52,084 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:52,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:56:52,084 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1976049641, now seen corresponding path program 16 times [2020-10-26 19:56:52,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:52,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046462912] [2020-10-26 19:56:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 19:56:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-26 19:56:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:56:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 19:56:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:53,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:53,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:53,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:56:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:53,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:56:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:56:53,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:56:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:53,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:56:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:53,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:56:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:53,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:56:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:53,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 180 proven. 64 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:56:53,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046462912] [2020-10-26 19:56:53,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:53,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:56:53,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755093468] [2020-10-26 19:56:53,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:56:53,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:53,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:56:53,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:53,493 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 15 states. [2020-10-26 19:56:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:54,111 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2020-10-26 19:56:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 19:56:54,112 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2020-10-26 19:56:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:54,114 INFO L225 Difference]: With dead ends: 194 [2020-10-26 19:56:54,114 INFO L226 Difference]: Without dead ends: 109 [2020-10-26 19:56:54,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:56:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-26 19:56:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-10-26 19:56:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-26 19:56:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2020-10-26 19:56:54,133 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 103 [2020-10-26 19:56:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:54,133 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2020-10-26 19:56:54,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:56:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2020-10-26 19:56:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-26 19:56:54,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:54,136 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:54,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:56:54,136 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:54,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1324915947, now seen corresponding path program 17 times [2020-10-26 19:56:54,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:54,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259256680] [2020-10-26 19:56:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:56,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-26 19:56:56,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2186 [2020-10-26 19:56:56,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-26 19:56:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 19:56:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:58,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:58,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-26 19:56:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 19:56:58,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:56:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:56:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:58,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:56:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:56:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:56:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-26 19:56:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:56:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:58,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:56:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 27 proven. 234 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:56:58,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259256680] [2020-10-26 19:56:58,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:58,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-26 19:56:58,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769914769] [2020-10-26 19:56:58,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-26 19:56:58,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:58,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-26 19:56:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:56:58,385 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 33 states. [2020-10-26 19:56:59,622 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-26 19:56:59,914 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-26 19:57:00,208 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-26 19:57:00,490 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-26 19:57:00,770 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-26 19:57:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:02,632 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2020-10-26 19:57:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 19:57:02,633 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 105 [2020-10-26 19:57:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:02,634 INFO L225 Difference]: With dead ends: 121 [2020-10-26 19:57:02,634 INFO L226 Difference]: Without dead ends: 118 [2020-10-26 19:57:02,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=572, Invalid=3588, Unknown=0, NotChecked=0, Total=4160 [2020-10-26 19:57:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-26 19:57:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-26 19:57:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-26 19:57:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2020-10-26 19:57:02,651 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 105 [2020-10-26 19:57:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:02,652 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2020-10-26 19:57:02,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-26 19:57:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2020-10-26 19:57:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-26 19:57:02,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:02,653 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:02,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:57:02,653 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 168446484, now seen corresponding path program 18 times [2020-10-26 19:57:02,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:02,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006179714] [2020-10-26 19:57:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 19:57:04,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1483 [2020-10-26 19:57:04,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:57:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 19:57:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-26 19:57:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:04,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:57:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:57:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:57:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:57:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-26 19:57:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:57:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:57:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:04,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 19:57:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:04,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 220 proven. 81 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:57:04,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006179714] [2020-10-26 19:57:04,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:04,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:57:04,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313740198] [2020-10-26 19:57:04,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:57:04,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:04,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:57:04,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:57:04,489 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 16 states. [2020-10-26 19:57:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:05,536 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-10-26 19:57:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 19:57:05,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 113 [2020-10-26 19:57:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:05,538 INFO L225 Difference]: With dead ends: 212 [2020-10-26 19:57:05,539 INFO L226 Difference]: Without dead ends: 119 [2020-10-26 19:57:05,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:57:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-26 19:57:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-10-26 19:57:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-26 19:57:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-10-26 19:57:05,558 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 113 [2020-10-26 19:57:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:05,558 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-10-26 19:57:05,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:57:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-10-26 19:57:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-26 19:57:05,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:05,562 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:05,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:57:05,562 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash -62133098, now seen corresponding path program 19 times [2020-10-26 19:57:05,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:05,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480822850] [2020-10-26 19:57:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2761 [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 19:57:08,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:10,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:57:10,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:10,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:57:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:10,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:10,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:57:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:10,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:57:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:10,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:57:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:10,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:10,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:57:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:10,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:57:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:10,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:57:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:10,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:57:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:10,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:10,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:10,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:10,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:10,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 30 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:57:10,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480822850] [2020-10-26 19:57:10,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:10,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-26 19:57:10,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610150495] [2020-10-26 19:57:10,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-26 19:57:10,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:10,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-26 19:57:10,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1158, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 19:57:10,619 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 36 states. [2020-10-26 19:57:12,064 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-26 19:57:12,401 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-26 19:57:12,723 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-26 19:57:13,045 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2020-10-26 19:57:13,385 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-26 19:57:13,727 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-26 19:57:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:16,009 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2020-10-26 19:57:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:57:16,013 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 115 [2020-10-26 19:57:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:16,015 INFO L225 Difference]: With dead ends: 131 [2020-10-26 19:57:16,015 INFO L226 Difference]: Without dead ends: 128 [2020-10-26 19:57:16,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=681, Invalid=4431, Unknown=0, NotChecked=0, Total=5112 [2020-10-26 19:57:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-26 19:57:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-10-26 19:57:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-26 19:57:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-10-26 19:57:16,033 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 115 [2020-10-26 19:57:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:16,033 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-10-26 19:57:16,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-26 19:57:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-10-26 19:57:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-26 19:57:16,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:16,034 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:16,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:57:16,035 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash -598425921, now seen corresponding path program 20 times [2020-10-26 19:57:16,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:16,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16688115] [2020-10-26 19:57:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 19:57:17,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-10-26 19:57:17,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:57:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 19:57:17,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:57:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:17,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:17,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:57:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:17,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:57:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:17,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:57:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:17,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:17,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:57:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:57:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:17,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:57:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:17,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:57:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:17,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:57:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:17,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 264 proven. 100 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-26 19:57:17,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16688115] [2020-10-26 19:57:17,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:17,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:17,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704662056] [2020-10-26 19:57:17,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:17,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:17,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:17,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:17,864 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 17 states. [2020-10-26 19:57:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:18,974 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2020-10-26 19:57:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 19:57:18,978 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 123 [2020-10-26 19:57:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:18,979 INFO L225 Difference]: With dead ends: 230 [2020-10-26 19:57:18,980 INFO L226 Difference]: Without dead ends: 129 [2020-10-26 19:57:18,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:57:18,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-26 19:57:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2020-10-26 19:57:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-26 19:57:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2020-10-26 19:57:18,996 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 123 [2020-10-26 19:57:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:18,996 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2020-10-26 19:57:18,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2020-10-26 19:57:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-26 19:57:18,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:18,998 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:18,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:57:18,998 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:18,998 INFO L82 PathProgramCache]: Analyzing trace with hash 110536385, now seen corresponding path program 21 times [2020-10-26 19:57:18,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:18,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640558701] [2020-10-26 19:57:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:21,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:21,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 19:57:21,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:21,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2573 [2020-10-26 19:57:21,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:21,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-26 19:57:21,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:57:21,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 19:57:21,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:24,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:24,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 19:57:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:57:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:24,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:57:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:24,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:57:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:57:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:57:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:57:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:57:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:57:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:57:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:24,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:24,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 33 proven. 352 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-26 19:57:24,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640558701] [2020-10-26 19:57:24,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:24,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-26 19:57:24,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805371261] [2020-10-26 19:57:24,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-26 19:57:24,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:24,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-26 19:57:24,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:57:24,690 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 41 states. [2020-10-26 19:57:26,664 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-26 19:57:27,103 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-10-26 19:57:27,333 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-26 19:57:27,646 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-10-26 19:57:27,889 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-10-26 19:57:28,215 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2020-10-26 19:57:28,475 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2020-10-26 19:57:28,873 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 80 [2020-10-26 19:57:29,172 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2020-10-26 19:57:29,436 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 79 [2020-10-26 19:57:30,337 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-26 19:57:30,641 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-26 19:57:30,947 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-26 19:57:31,259 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-26 19:57:31,574 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-26 19:57:31,891 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-10-26 19:57:32,517 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-10-26 19:57:32,823 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-26 19:57:33,346 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-26 19:57:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:34,042 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2020-10-26 19:57:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-26 19:57:34,042 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 125 [2020-10-26 19:57:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:34,044 INFO L225 Difference]: With dead ends: 141 [2020-10-26 19:57:34,044 INFO L226 Difference]: Without dead ends: 138 [2020-10-26 19:57:34,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=817, Invalid=5503, Unknown=0, NotChecked=0, Total=6320 [2020-10-26 19:57:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-26 19:57:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-26 19:57:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-26 19:57:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2020-10-26 19:57:34,064 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 125 [2020-10-26 19:57:34,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:34,064 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2020-10-26 19:57:34,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-26 19:57:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2020-10-26 19:57:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-26 19:57:34,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:34,066 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:34,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:57:34,066 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:34,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1664868886, now seen corresponding path program 22 times [2020-10-26 19:57:34,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:34,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170703128] [2020-10-26 19:57:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 19:57:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1890 [2020-10-26 19:57:35,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-26 19:57:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-26 19:57:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:36,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:36,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 19:57:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:57:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:57:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:57:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:57:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:36,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:57:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:57:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:36,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:57:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:57:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:57:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:57:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:36,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:36,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 312 proven. 121 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-26 19:57:36,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170703128] [2020-10-26 19:57:36,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:36,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:57:36,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280862052] [2020-10-26 19:57:36,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:57:36,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:36,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:57:36,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:57:36,506 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 18 states. [2020-10-26 19:57:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:37,671 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2020-10-26 19:57:37,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-26 19:57:37,673 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-10-26 19:57:37,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:37,675 INFO L225 Difference]: With dead ends: 248 [2020-10-26 19:57:37,676 INFO L226 Difference]: Without dead ends: 139 [2020-10-26 19:57:37,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:57:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-26 19:57:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2020-10-26 19:57:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-26 19:57:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-10-26 19:57:37,694 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 133 [2020-10-26 19:57:37,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:37,694 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-10-26 19:57:37,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:57:37,694 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-10-26 19:57:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-26 19:57:37,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:37,696 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:37,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:57:37,696 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash 361589612, now seen corresponding path program 23 times [2020-10-26 19:57:37,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:37,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317977883] [2020-10-26 19:57:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:40,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:40,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-26 19:57:40,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:40,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2978 [2020-10-26 19:57:40,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-26 19:57:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:57:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 19:57:40,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:43,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:43,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:43,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:57:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:43,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:43,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:57:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:57:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:43,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:57:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:43,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:57:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:43,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:57:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:43,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:57:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:43,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:57:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:43,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:57:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:43,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 19:57:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:43,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:43,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 36 proven. 420 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-26 19:57:43,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317977883] [2020-10-26 19:57:43,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:43,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-26 19:57:43,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756346329] [2020-10-26 19:57:43,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-26 19:57:43,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:43,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-26 19:57:43,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1671, Unknown=0, NotChecked=0, Total=1806 [2020-10-26 19:57:43,562 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 43 states. [2020-10-26 19:57:45,192 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-26 19:57:45,623 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-26 19:57:46,009 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-10-26 19:57:46,431 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-26 19:57:46,903 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-26 19:57:47,378 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-26 19:57:47,866 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2020-10-26 19:57:48,405 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2020-10-26 19:57:48,677 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-26 19:57:49,008 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-26 19:57:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:52,042 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2020-10-26 19:57:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-26 19:57:52,045 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 135 [2020-10-26 19:57:52,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:52,047 INFO L225 Difference]: With dead ends: 151 [2020-10-26 19:57:52,047 INFO L226 Difference]: Without dead ends: 148 [2020-10-26 19:57:52,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=942, Invalid=6368, Unknown=0, NotChecked=0, Total=7310 [2020-10-26 19:57:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-26 19:57:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-10-26 19:57:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-26 19:57:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-10-26 19:57:52,066 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 135 [2020-10-26 19:57:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:52,067 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-10-26 19:57:52,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-26 19:57:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-10-26 19:57:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 19:57:52,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:52,068 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:52,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:57:52,069 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:52,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:52,069 INFO L82 PathProgramCache]: Analyzing trace with hash -999487595, now seen corresponding path program 24 times [2020-10-26 19:57:52,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:52,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785288380] [2020-10-26 19:57:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-26 19:57:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-10-26 19:57:53,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-26 19:57:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 19:57:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:54,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:54,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:57:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:57:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:57:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:54,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:57:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:57:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:57:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:57:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:57:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:57:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 19:57:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 19:57:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:54,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:54,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:54,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 364 proven. 144 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-26 19:57:54,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785288380] [2020-10-26 19:57:54,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:54,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:57:54,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721280309] [2020-10-26 19:57:54,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:57:54,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:54,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:57:54,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:57:54,396 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 19 states. [2020-10-26 19:57:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:55,621 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2020-10-26 19:57:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 19:57:55,622 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 143 [2020-10-26 19:57:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:55,624 INFO L225 Difference]: With dead ends: 266 [2020-10-26 19:57:55,624 INFO L226 Difference]: Without dead ends: 149 [2020-10-26 19:57:55,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=776, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 19:57:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-26 19:57:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2020-10-26 19:57:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-26 19:57:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2020-10-26 19:57:55,642 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 143 [2020-10-26 19:57:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:55,643 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2020-10-26 19:57:55,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:57:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2020-10-26 19:57:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-26 19:57:55,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:55,644 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:55,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:57:55,644 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:55,645 INFO L82 PathProgramCache]: Analyzing trace with hash -69412201, now seen corresponding path program 25 times [2020-10-26 19:57:55,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:55,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381683052] [2020-10-26 19:57:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:59,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-26 19:57:59,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4279 [2020-10-26 19:57:59,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-26 19:57:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:57:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 19:57:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:03,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:03,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:58:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:58:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:58:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:58:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:03,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-26 19:58:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:58:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:58:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 19:58:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:58:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:03,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-26 19:58:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 19:58:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:58:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:03,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:03,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 39 proven. 494 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-26 19:58:03,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381683052] [2020-10-26 19:58:03,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:03,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-26 19:58:03,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149735848] [2020-10-26 19:58:03,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-26 19:58:03,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:03,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-26 19:58:03,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1682, Unknown=0, NotChecked=0, Total=1806 [2020-10-26 19:58:03,648 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 43 states. [2020-10-26 19:58:05,041 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-26 19:58:05,651 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-26 19:58:06,123 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-26 19:58:06,592 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-26 19:58:07,093 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-10-26 19:58:07,624 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2020-10-26 19:58:08,189 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-10-26 19:58:08,835 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2020-10-26 19:58:09,449 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 89 [2020-10-26 19:58:09,724 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 19:58:10,067 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-10-26 19:58:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:14,915 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2020-10-26 19:58:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-26 19:58:14,916 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 145 [2020-10-26 19:58:14,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:14,919 INFO L225 Difference]: With dead ends: 161 [2020-10-26 19:58:14,919 INFO L226 Difference]: Without dead ends: 158 [2020-10-26 19:58:14,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=967, Invalid=6689, Unknown=0, NotChecked=0, Total=7656 [2020-10-26 19:58:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-26 19:58:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2020-10-26 19:58:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-26 19:58:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2020-10-26 19:58:14,945 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 145 [2020-10-26 19:58:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:14,946 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2020-10-26 19:58:14,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-26 19:58:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2020-10-26 19:58:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-26 19:58:14,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:14,948 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:14,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 19:58:14,948 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:14,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:14,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2136742848, now seen corresponding path program 26 times [2020-10-26 19:58:14,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:14,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058922628] [2020-10-26 19:58:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-26 19:58:17,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2093 [2020-10-26 19:58:17,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-26 19:58:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-26 19:58:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:17,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:17,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-26 19:58:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:58:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:58:17,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:58:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:58:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:17,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-26 19:58:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:58:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:58:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:58:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:17,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 19:58:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 19:58:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-26 19:58:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 19:58:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:17,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:58:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:17,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-26 19:58:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:17,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:17,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:17,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:58:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 420 proven. 169 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-26 19:58:17,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058922628] [2020-10-26 19:58:17,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:17,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:58:17,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604092374] [2020-10-26 19:58:17,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:58:17,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:17,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:58:17,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:58:17,751 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 20 states. [2020-10-26 19:58:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:19,582 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2020-10-26 19:58:19,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:58:19,584 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 153 [2020-10-26 19:58:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:19,588 INFO L225 Difference]: With dead ends: 284 [2020-10-26 19:58:19,588 INFO L226 Difference]: Without dead ends: 159 [2020-10-26 19:58:19,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 19:58:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-26 19:58:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-10-26 19:58:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-26 19:58:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-10-26 19:58:19,626 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 153 [2020-10-26 19:58:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:19,627 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-10-26 19:58:19,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:58:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-10-26 19:58:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-26 19:58:19,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:19,629 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:19,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 19:58:19,629 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:19,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:19,629 INFO L82 PathProgramCache]: Analyzing trace with hash 556373058, now seen corresponding path program 27 times [2020-10-26 19:58:19,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:19,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305849340] [2020-10-26 19:58:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3862 [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-26 19:58:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:28,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:58:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:58:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:58:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:58:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:58:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:28,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:28,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:58:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:58:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:58:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:28,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 19:58:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:58:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 19:58:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:28,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-26 19:58:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:28,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:28,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:28,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 42 proven. 574 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-26 19:58:28,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305849340] [2020-10-26 19:58:28,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:28,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-26 19:58:28,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217911104] [2020-10-26 19:58:28,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-26 19:58:28,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:28,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-26 19:58:28,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2114, Unknown=0, NotChecked=0, Total=2256 [2020-10-26 19:58:28,885 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 48 states. [2020-10-26 19:58:30,703 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-26 19:58:31,221 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-26 19:58:31,777 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-26 19:58:32,360 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-26 19:58:32,962 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-26 19:58:33,600 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2020-10-26 19:58:34,246 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2020-10-26 19:58:34,943 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2020-10-26 19:58:35,645 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 90 [2020-10-26 19:58:35,931 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-26 19:58:36,391 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2020-10-26 19:58:36,678 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 19:58:37,131 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 95 [2020-10-26 19:58:37,494 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 19:58:37,944 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-26 19:58:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:46,477 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-10-26 19:58:46,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-26 19:58:46,479 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 155 [2020-10-26 19:58:46,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:46,481 INFO L225 Difference]: With dead ends: 171 [2020-10-26 19:58:46,481 INFO L226 Difference]: Without dead ends: 168 [2020-10-26 19:58:46,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=1160, Invalid=7770, Unknown=0, NotChecked=0, Total=8930 [2020-10-26 19:58:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-26 19:58:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2020-10-26 19:58:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-26 19:58:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-10-26 19:58:46,502 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 155 [2020-10-26 19:58:46,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:46,502 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-10-26 19:58:46,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-26 19:58:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-10-26 19:58:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-26 19:58:46,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:46,504 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:46,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 19:58:46,504 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:46,505 INFO L82 PathProgramCache]: Analyzing trace with hash 378927723, now seen corresponding path program 28 times [2020-10-26 19:58:46,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:46,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150481187] [2020-10-26 19:58:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:48,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-26 19:58:48,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-10-26 19:58:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-26 19:58:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 19:58:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:49,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:58:49,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:49,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:58:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:58:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:58:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:58:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:49,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:58:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:58:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:58:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:58:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 19:58:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:58:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 19:58:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-26 19:58:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 19:58:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:49,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:49,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 480 proven. 196 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-26 19:58:49,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150481187] [2020-10-26 19:58:49,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:49,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:58:49,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307559483] [2020-10-26 19:58:49,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:58:49,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:49,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:58:49,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:58:49,866 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 21 states. [2020-10-26 19:58:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:52,377 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2020-10-26 19:58:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 19:58:52,379 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 163 [2020-10-26 19:58:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:52,382 INFO L225 Difference]: With dead ends: 302 [2020-10-26 19:58:52,382 INFO L226 Difference]: Without dead ends: 169 [2020-10-26 19:58:52,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 19:58:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-26 19:58:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2020-10-26 19:58:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-26 19:58:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2020-10-26 19:58:52,406 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 163 [2020-10-26 19:58:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:52,406 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2020-10-26 19:58:52,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:58:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2020-10-26 19:58:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-26 19:58:52,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:52,408 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:52,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 19:58:52,408 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:52,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:52,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1813002349, now seen corresponding path program 29 times [2020-10-26 19:58:52,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:52,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096959800] [2020-10-26 19:58:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:57,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:57,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-26 19:58:57,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 19:58:57,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-26 19:58:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:58:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 19:58:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:05,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 19:59:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:59:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:59:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:59:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:05,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:59:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:05,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:59:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:59:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:59:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:59:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:59:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:59:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-26 19:59:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-26 19:59:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:59:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 19:59:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:05,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 45 proven. 660 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-26 19:59:05,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096959800] [2020-10-26 19:59:05,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:05,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-26 19:59:05,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138695780] [2020-10-26 19:59:05,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-26 19:59:05,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-26 19:59:05,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2600, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:59:05,378 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand 53 states. [2020-10-26 19:59:07,823 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-26 19:59:08,185 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-26 19:59:08,588 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-10-26 19:59:08,996 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-26 19:59:09,411 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-26 19:59:09,854 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-26 19:59:10,350 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-10-26 19:59:10,802 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-26 19:59:11,320 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-10-26 19:59:11,808 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-26 19:59:12,275 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2020-10-26 19:59:12,708 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-26 19:59:13,194 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2020-10-26 19:59:13,702 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-26 19:59:14,247 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2020-10-26 19:59:14,813 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-10-26 19:59:15,390 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2020-10-26 19:59:15,966 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-10-26 19:59:16,585 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2020-10-26 19:59:17,281 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2020-10-26 19:59:18,028 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 95 [2020-10-26 19:59:18,656 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2020-10-26 19:59:19,470 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 103 [2020-10-26 19:59:20,212 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 104 [2020-10-26 19:59:20,884 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 102 [2020-10-26 19:59:22,564 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-10-26 19:59:23,325 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-26 19:59:24,115 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-26 19:59:24,892 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-26 19:59:25,654 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-26 19:59:26,354 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-26 19:59:27,122 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-26 19:59:27,988 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-26 19:59:28,940 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-26 19:59:29,871 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-26 19:59:30,776 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-26 19:59:31,564 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-26 19:59:32,318 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-26 19:59:33,125 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-26 19:59:33,869 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-26 19:59:34,356 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-26 19:59:35,737 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-26 19:59:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:36,077 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2020-10-26 19:59:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-26 19:59:36,080 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 165 [2020-10-26 19:59:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:36,082 INFO L225 Difference]: With dead ends: 181 [2020-10-26 19:59:36,082 INFO L226 Difference]: Without dead ends: 178 [2020-10-26 19:59:36,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=1347, Invalid=9365, Unknown=0, NotChecked=0, Total=10712 [2020-10-26 19:59:36,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-26 19:59:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-10-26 19:59:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-26 19:59:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2020-10-26 19:59:36,113 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 165 [2020-10-26 19:59:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:36,114 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2020-10-26 19:59:36,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-26 19:59:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2020-10-26 19:59:36,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-26 19:59:36,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:36,115 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:36,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-26 19:59:36,117 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash -636009578, now seen corresponding path program 30 times [2020-10-26 19:59:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:36,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115318326] [2020-10-26 19:59:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:36,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:39,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:39,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-26 19:59:39,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3151 [2020-10-26 19:59:39,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-26 19:59:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-26 19:59:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-26 19:59:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:39,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:39,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:39,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:39,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:59:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:39,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:39,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:39,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:39,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:39,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:39,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:39,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:39,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:59:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:39,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:39,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:39,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:39,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:59:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-26 19:59:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:40,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 19:59:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:59:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:59:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:59:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-26 19:59:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:59:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-26 19:59:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-26 19:59:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-26 19:59:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 19:59:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-26 19:59:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:40,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:40,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:40,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:40,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:40,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:40,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 544 proven. 225 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-26 19:59:40,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115318326] [2020-10-26 19:59:40,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:40,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:59:40,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194066937] [2020-10-26 19:59:40,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:59:40,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:59:40,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:59:40,101 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand 22 states. [2020-10-26 19:59:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:43,174 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2020-10-26 19:59:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-26 19:59:43,177 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 173 [2020-10-26 19:59:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:43,179 INFO L225 Difference]: With dead ends: 320 [2020-10-26 19:59:43,179 INFO L226 Difference]: Without dead ends: 179 [2020-10-26 19:59:43,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=576, Invalid=1064, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:59:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-26 19:59:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2020-10-26 19:59:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-26 19:59:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2020-10-26 19:59:43,205 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 173 [2020-10-26 19:59:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:43,205 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2020-10-26 19:59:43,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:59:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2020-10-26 19:59:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-26 19:59:43,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:43,207 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:43,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-26 19:59:43,207 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:43,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:43,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1406834920, now seen corresponding path program 31 times [2020-10-26 19:59:43,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:43,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73103942] [2020-10-26 19:59:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:48,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:48,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-26 19:59:48,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:48,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:59:48,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-26 19:59:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:59:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 19:59:48,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:55,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:59:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:55,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:59:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:55,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:59:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:55,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:59:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:59:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:55,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:59:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:55,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:59:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:55,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:59:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:55,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:59:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:55,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:55,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:55,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:55,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:55,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:59:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:56,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:56,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:56,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 19:59:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:56,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:56,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:56,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:56,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:56,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:56,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 19:59:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:56,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:56,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:56,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:56,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:56,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:56,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:56,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-26 19:59:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:56,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:56,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:56,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:56,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:56,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:56,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-26 19:59:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:56,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:56,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-26 19:59:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:56,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:56,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:56,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:56,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:56,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-26 19:59:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:56,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:56,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:56,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:56,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 48 proven. 752 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-26 19:59:56,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73103942] [2020-10-26 19:59:56,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:56,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-26 19:59:56,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278119206] [2020-10-26 19:59:56,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-26 19:59:56,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:56,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-26 19:59:56,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2498, Unknown=0, NotChecked=0, Total=2652 [2020-10-26 19:59:56,121 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 52 states.