/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/tcpy.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:14:10,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:14:10,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:14:10,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:14:10,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:14:10,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:14:10,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:14:10,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:14:10,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:14:10,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:14:10,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:14:10,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:14:10,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:14:10,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:14:10,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:14:10,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:14:10,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:14:10,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:14:10,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:14:10,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:14:10,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:14:10,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:14:10,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:14:10,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:14:10,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:14:10,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:14:10,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:14:10,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:14:10,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:14:10,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:14:10,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:14:10,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:14:10,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:14:10,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:14:10,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:14:10,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:14:10,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:14:10,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:14:10,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:14:10,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:14:10,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:14:10,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:14:10,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:14:10,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:14:10,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:14:10,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:14:10,990 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:14:10,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:14:10,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:14:10,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:14:10,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:14:10,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:14:10,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:14:10,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:14:10,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:14:10,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:14:10,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:14:10,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:14:10,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:14:10,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:14:10,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:14:10,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:14:10,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:14:10,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:14:10,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:14:10,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:14:10,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:14:10,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:14:10,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:14:10,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:14:10,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:14:10,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:14:11,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:14:11,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:14:11,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:14:11,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:14:11,543 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:14:11,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/tcpy.c [2020-10-29 04:14:11,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0429dad70/a01b4464019e4e53b7b7f94b1ef5eae0/FLAG16ecdf6ae [2020-10-29 04:14:12,347 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:14:12,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/tcpy.c [2020-10-29 04:14:12,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0429dad70/a01b4464019e4e53b7b7f94b1ef5eae0/FLAG16ecdf6ae [2020-10-29 04:14:12,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0429dad70/a01b4464019e4e53b7b7f94b1ef5eae0 [2020-10-29 04:14:12,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:14:12,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:14:12,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:14:12,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:14:12,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:14:12,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:14:12" (1/1) ... [2020-10-29 04:14:12,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34db65e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:12, skipping insertion in model container [2020-10-29 04:14:12,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:14:12" (1/1) ... [2020-10-29 04:14:12,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:14:12,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:14:12,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:14:12,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:14:12,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:14:13,019 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:14:13,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13 WrapperNode [2020-10-29 04:14:13,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:14:13,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:14:13,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:14:13,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:14:13,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (1/1) ... [2020-10-29 04:14:13,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (1/1) ... [2020-10-29 04:14:13,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (1/1) ... [2020-10-29 04:14:13,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (1/1) ... [2020-10-29 04:14:13,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (1/1) ... [2020-10-29 04:14:13,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (1/1) ... [2020-10-29 04:14:13,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (1/1) ... [2020-10-29 04:14:13,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:14:13,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:14:13,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:14:13,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:14:13,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:14:13,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:14:13,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:14:13,247 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:14:13,248 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 04:14:13,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:14:13,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:14:13,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:14:13,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:14:13,250 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:14:13,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:14:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 04:14:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:14:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:14:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 04:14:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:14:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 04:14:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:14:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:14:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:14:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:14:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:14:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:14:13,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:14:13,935 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 04:14:13,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:14:13 BoogieIcfgContainer [2020-10-29 04:14:13,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:14:13,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:14:13,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:14:13,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:14:13,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:14:12" (1/3) ... [2020-10-29 04:14:13,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35342d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:14:13, skipping insertion in model container [2020-10-29 04:14:13,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:14:13" (2/3) ... [2020-10-29 04:14:13,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35342d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:14:13, skipping insertion in model container [2020-10-29 04:14:13,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:14:13" (3/3) ... [2020-10-29 04:14:13,949 INFO L111 eAbstractionObserver]: Analyzing ICFG tcpy.c [2020-10-29 04:14:13,962 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:14:13,968 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:14:13,984 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:14:14,015 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:14:14,015 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:14:14,015 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:14:14,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:14:14,016 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:14:14,016 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:14:14,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:14:14,016 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:14:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-29 04:14:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 04:14:14,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:14,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:14,046 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:14,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:14,053 INFO L82 PathProgramCache]: Analyzing trace with hash -597269868, now seen corresponding path program 1 times [2020-10-29 04:14:14,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:14,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916225651] [2020-10-29 04:14:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:15,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:15,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:14:15,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:14:15,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-29 04:14:15,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:15,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:14:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:14:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:14:15,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:15,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:15,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:15,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:14:15,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:15,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 04:14:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:15,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:15,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:15,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:15,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:15,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:14:15,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:15,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:14:15,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916225651] [2020-10-29 04:14:15,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:14:15,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:14:15,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572989784] [2020-10-29 04:14:15,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:14:15,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:15,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:14:15,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:14:15,639 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-29 04:14:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:16,047 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2020-10-29 04:14:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:14:16,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-29 04:14:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:16,059 INFO L225 Difference]: With dead ends: 76 [2020-10-29 04:14:16,060 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 04:14:16,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:14:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 04:14:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-29 04:14:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 04:14:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-29 04:14:16,120 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 23 [2020-10-29 04:14:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:16,121 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-29 04:14:16,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:14:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-29 04:14:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 04:14:16,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:16,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:16,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:14:16,123 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:16,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1641909942, now seen corresponding path program 1 times [2020-10-29 04:14:16,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:16,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074861161] [2020-10-29 04:14:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:16,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:17,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:14:17,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-29 04:14:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:17,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:14:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:14:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:14:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:14:17,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:17,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:17,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:14:17,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:17,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:17,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:17,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:17,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:17,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 04:14:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:17,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:17,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:17,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:14:17,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:17,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:14:17,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074861161] [2020-10-29 04:14:17,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:17,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:14:17,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326415228] [2020-10-29 04:14:17,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:14:17,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:17,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:14:17,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:14:17,405 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 9 states. [2020-10-29 04:14:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:17,873 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-29 04:14:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:14:17,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-29 04:14:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:17,876 INFO L225 Difference]: With dead ends: 55 [2020-10-29 04:14:17,876 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 04:14:17,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:14:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 04:14:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-10-29 04:14:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 04:14:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-29 04:14:17,890 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 27 [2020-10-29 04:14:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:17,891 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-29 04:14:17,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:14:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-29 04:14:17,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:14:17,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:17,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:17,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:14:17,893 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:17,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1289633752, now seen corresponding path program 2 times [2020-10-29 04:14:17,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:17,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027422561] [2020-10-29 04:14:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:17,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:18,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:14:18,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-29 04:14:18,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:18,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:14:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:14:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:19,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:19,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:19,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:19,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:19,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:19,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 04:14:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:19,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:19,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:19,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:14:19,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:19,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:14:19,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027422561] [2020-10-29 04:14:19,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:19,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:14:19,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256352096] [2020-10-29 04:14:19,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:14:19,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:19,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:14:19,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:14:19,240 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 11 states. [2020-10-29 04:14:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:19,822 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-10-29 04:14:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:14:19,823 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-29 04:14:19,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:19,826 INFO L225 Difference]: With dead ends: 53 [2020-10-29 04:14:19,827 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 04:14:19,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:14:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 04:14:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-10-29 04:14:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 04:14:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-29 04:14:19,839 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 29 [2020-10-29 04:14:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:19,840 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-29 04:14:19,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:14:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-29 04:14:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 04:14:19,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:19,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:19,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:14:19,842 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:19,843 INFO L82 PathProgramCache]: Analyzing trace with hash -47832477, now seen corresponding path program 1 times [2020-10-29 04:14:19,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:19,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454731980] [2020-10-29 04:14:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:19,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:19,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:22,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:22,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 04:14:22,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:14:22,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2318 [2020-10-29 04:14:22,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:22,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:14:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:14:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:22,622 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2020-10-29 04:14:23,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:23,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 04:14:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:14:23,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:23,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:14:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:23,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:23,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:23,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:23,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:23,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:23,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:23,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:23,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:23,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:14:23,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454731980] [2020-10-29 04:14:23,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:23,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:14:23,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618139320] [2020-10-29 04:14:23,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:14:23,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:14:23,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:14:23,061 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 14 states. [2020-10-29 04:14:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:24,281 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-10-29 04:14:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:14:24,282 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-29 04:14:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:24,284 INFO L225 Difference]: With dead ends: 62 [2020-10-29 04:14:24,284 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 04:14:24,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:14:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 04:14:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2020-10-29 04:14:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 04:14:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-29 04:14:24,309 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 35 [2020-10-29 04:14:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:24,310 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-29 04:14:24,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:14:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-29 04:14:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 04:14:24,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:24,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:24,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:14:24,316 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:24,317 INFO L82 PathProgramCache]: Analyzing trace with hash -369323643, now seen corresponding path program 2 times [2020-10-29 04:14:24,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:24,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302287434] [2020-10-29 04:14:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:25,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 04:14:25,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-29 04:14:25,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:25,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:14:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:14:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 04:14:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:14:25,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:25,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:25,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:14:25,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:25,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:14:25,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 04:14:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:25,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:25,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:25,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:14:25,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:25,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:25,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:25,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:14:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:25,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:25,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:25,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:25,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:14:25,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302287434] [2020-10-29 04:14:25,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:25,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:14:25,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003280462] [2020-10-29 04:14:25,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:14:25,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:25,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:14:25,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:14:25,377 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 11 states. [2020-10-29 04:14:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:26,107 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-10-29 04:14:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:14:26,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-29 04:14:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:26,109 INFO L225 Difference]: With dead ends: 85 [2020-10-29 04:14:26,109 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 04:14:26,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:14:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 04:14:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 53. [2020-10-29 04:14:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 04:14:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-29 04:14:26,148 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 37 [2020-10-29 04:14:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:26,150 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-29 04:14:26,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:14:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-29 04:14:26,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 04:14:26,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:26,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:26,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:14:26,153 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:26,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:26,154 INFO L82 PathProgramCache]: Analyzing trace with hash -84688857, now seen corresponding path program 3 times [2020-10-29 04:14:26,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:26,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263755265] [2020-10-29 04:14:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 04:14:26,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:26,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-29 04:14:26,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:14:26,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:14:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:27,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:27,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:27,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:27,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:27,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:27,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:27,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 04:14:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:27,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:27,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:27,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:14:27,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:27,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:27,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:27,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:27,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:27,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:14:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:27,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:27,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:27,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:14:27,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:27,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:27,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:27,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:14:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:14:27,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263755265] [2020-10-29 04:14:27,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:27,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:14:27,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835491430] [2020-10-29 04:14:27,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:14:27,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:27,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:14:27,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:14:27,515 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 13 states. [2020-10-29 04:14:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:28,490 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2020-10-29 04:14:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:14:28,492 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-29 04:14:28,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:28,493 INFO L225 Difference]: With dead ends: 126 [2020-10-29 04:14:28,493 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 04:14:28,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:14:28,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 04:14:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 48. [2020-10-29 04:14:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 04:14:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-29 04:14:28,513 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 39 [2020-10-29 04:14:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:28,514 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-29 04:14:28,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:14:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-29 04:14:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 04:14:28,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:28,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:28,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:14:28,523 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:28,524 INFO L82 PathProgramCache]: Analyzing trace with hash 256676818, now seen corresponding path program 4 times [2020-10-29 04:14:28,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:28,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794573618] [2020-10-29 04:14:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:28,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:33,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:14:33,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:14:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 04:14:33,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:33,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:14:33,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:33,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 04:14:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:33,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:33,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:14:33,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:33,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:33,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:33,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:33,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:33,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 04:14:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:33,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:33,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:14:33,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:33,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:33,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:33,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:33,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:33,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:14:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:33,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:33,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:33,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:33,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 04:14:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:33,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:14:33,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794573618] [2020-10-29 04:14:33,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:33,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:14:33,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417301110] [2020-10-29 04:14:33,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:14:33,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:33,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:14:33,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:14:33,734 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 10 states. [2020-10-29 04:14:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:34,291 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-10-29 04:14:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:14:34,292 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-29 04:14:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:34,293 INFO L225 Difference]: With dead ends: 107 [2020-10-29 04:14:34,293 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 04:14:34,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:14:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 04:14:34,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2020-10-29 04:14:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 04:14:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-29 04:14:34,329 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 45 [2020-10-29 04:14:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:34,329 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-29 04:14:34,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:14:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-29 04:14:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 04:14:34,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:34,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:34,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:14:34,336 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash 522372628, now seen corresponding path program 5 times [2020-10-29 04:14:34,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:34,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445341995] [2020-10-29 04:14:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:39,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 04:14:39,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:14:39,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 04:14:39,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:39,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:14:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:14:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 04:14:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:39,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:39,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:14:39,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:39,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 04:14:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:39,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:39,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:14:39,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:14:39,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:39,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:14:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:39,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:39,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:39,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:39,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:39,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:14:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:39,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:39,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:39,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:39,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:39,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:14:39,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445341995] [2020-10-29 04:14:39,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:39,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:14:39,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039816895] [2020-10-29 04:14:39,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:14:39,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:39,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:14:39,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:14:39,709 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2020-10-29 04:14:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:40,268 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-10-29 04:14:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:14:40,268 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-29 04:14:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:40,270 INFO L225 Difference]: With dead ends: 84 [2020-10-29 04:14:40,270 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 04:14:40,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:14:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 04:14:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-10-29 04:14:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 04:14:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-29 04:14:40,283 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 47 [2020-10-29 04:14:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:40,284 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-29 04:14:40,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:14:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-29 04:14:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 04:14:40,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:40,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:40,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:14:40,286 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:40,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:40,286 INFO L82 PathProgramCache]: Analyzing trace with hash -446578122, now seen corresponding path program 6 times [2020-10-29 04:14:40,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:40,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332017607] [2020-10-29 04:14:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:40,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:40,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:45,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:45,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:14:45,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:14:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:14:45,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:45,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:14:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:14:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:14:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:45,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:45,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:45,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:45,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:14:45,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:45,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:45,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 04:14:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:45,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:45,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:45,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:14:45,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:45,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 04:14:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:45,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:45,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:45,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:45,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:14:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:46,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:46,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:46,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:46,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:46,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 04:14:46,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332017607] [2020-10-29 04:14:46,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:46,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:14:46,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086853191] [2020-10-29 04:14:46,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:14:46,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:46,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:14:46,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:14:46,031 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 12 states. [2020-10-29 04:14:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:46,715 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-10-29 04:14:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:14:46,715 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-29 04:14:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:46,717 INFO L225 Difference]: With dead ends: 93 [2020-10-29 04:14:46,717 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 04:14:46,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:14:46,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 04:14:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-29 04:14:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 04:14:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-29 04:14:46,731 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 49 [2020-10-29 04:14:46,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:46,732 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-29 04:14:46,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:14:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-29 04:14:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 04:14:46,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:46,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:46,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:14:46,733 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash -563018888, now seen corresponding path program 7 times [2020-10-29 04:14:46,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:46,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815902662] [2020-10-29 04:14:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:46,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:51,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:51,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 04:14:51,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:14:51,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 04:14:51,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:51,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:14:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 04:14:51,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:52,178 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 26 [2020-10-29 04:14:52,346 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 40 [2020-10-29 04:14:52,497 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-10-29 04:14:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:52,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:52,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:52,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:52,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:52,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:52,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:14:52,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:14:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:52,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:52,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:52,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:52,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:52,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:52,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:14:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:14:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:52,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:52,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:52,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:52,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:14:52,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:52,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:52,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:14:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:52,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:52,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:52,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:52,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:52,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:52,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 04:14:52,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815902662] [2020-10-29 04:14:52,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:52,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:14:52,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287403648] [2020-10-29 04:14:52,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:14:52,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:14:52,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:14:52,969 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 16 states. [2020-10-29 04:14:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:54,492 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-10-29 04:14:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:14:54,493 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-10-29 04:14:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:54,495 INFO L225 Difference]: With dead ends: 83 [2020-10-29 04:14:54,495 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 04:14:54,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2020-10-29 04:14:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 04:14:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2020-10-29 04:14:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 04:14:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-10-29 04:14:54,524 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 51 [2020-10-29 04:14:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:54,525 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-10-29 04:14:54,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:14:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-10-29 04:14:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 04:14:54,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:54,533 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:54,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:14:54,533 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:54,534 INFO L82 PathProgramCache]: Analyzing trace with hash 169227930, now seen corresponding path program 8 times [2020-10-29 04:14:54,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:54,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051966607] [2020-10-29 04:14:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:54,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:57,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:57,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:14:57,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:14:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2490 [2020-10-29 04:14:57,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:57,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:14:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 04:14:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:57,721 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2020-10-29 04:14:57,914 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2020-10-29 04:14:58,078 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-29 04:14:58,288 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-10-29 04:14:58,463 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2020-10-29 04:14:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:58,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:58,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:58,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:58,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:58,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:58,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:58,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:58,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:58,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:14:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:58,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:58,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:58,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 04:14:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:58,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:58,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:14:58,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:58,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:14:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:58,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 04:14:58,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051966607] [2020-10-29 04:14:58,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:58,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:14:58,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955768843] [2020-10-29 04:14:58,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:14:58,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:58,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:14:58,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:14:58,799 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 18 states. [2020-10-29 04:14:59,123 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-29 04:14:59,455 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-29 04:14:59,679 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-10-29 04:14:59,882 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-29 04:15:00,090 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-29 04:15:00,313 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-29 04:15:00,520 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2020-10-29 04:15:00,897 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-29 04:15:01,194 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-29 04:15:01,421 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-29 04:15:01,771 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-29 04:15:02,081 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-10-29 04:15:02,483 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-29 04:15:02,799 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-29 04:15:03,010 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-10-29 04:15:03,252 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-10-29 04:15:03,435 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-29 04:15:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:03,572 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2020-10-29 04:15:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 04:15:03,574 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2020-10-29 04:15:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:03,576 INFO L225 Difference]: With dead ends: 131 [2020-10-29 04:15:03,576 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 04:15:03,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=278, Invalid=1282, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:15:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 04:15:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 100. [2020-10-29 04:15:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 04:15:03,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2020-10-29 04:15:03,637 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 53 [2020-10-29 04:15:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:03,637 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2020-10-29 04:15:03,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:15:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2020-10-29 04:15:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 04:15:03,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:03,639 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:03,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:15:03,640 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:03,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2067728092, now seen corresponding path program 9 times [2020-10-29 04:15:03,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:03,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533850710] [2020-10-29 04:15:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:03,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:04,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 04:15:08,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:15:08,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:15:08,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:15:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:15:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 04:15:08,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,964 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-10-29 04:15:09,814 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2020-10-29 04:15:09,974 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2020-10-29 04:15:10,135 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 40 [2020-10-29 04:15:10,320 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2020-10-29 04:15:10,500 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 43 [2020-10-29 04:15:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:10,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:10,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:10,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:15:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:15:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:10,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:10,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:15:10,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:10,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:10,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:15:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:10,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:10,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:10,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:15:10,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:10,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 04:15:10,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533850710] [2020-10-29 04:15:10,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:10,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:15:10,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133344659] [2020-10-29 04:15:10,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:15:10,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:10,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:15:10,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:15:10,844 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand 20 states. [2020-10-29 04:15:11,819 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-29 04:15:12,078 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-29 04:15:12,236 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-29 04:15:12,438 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-29 04:15:12,612 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-29 04:15:12,936 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-10-29 04:15:13,199 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-29 04:15:13,445 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-10-29 04:15:13,892 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-29 04:15:14,073 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-29 04:15:14,338 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-29 04:15:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:14,523 INFO L93 Difference]: Finished difference Result 164 states and 184 transitions. [2020-10-29 04:15:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 04:15:14,524 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-29 04:15:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:14,527 INFO L225 Difference]: With dead ends: 164 [2020-10-29 04:15:14,527 INFO L226 Difference]: Without dead ends: 161 [2020-10-29 04:15:14,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=317, Invalid=1165, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 04:15:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-29 04:15:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 110. [2020-10-29 04:15:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 04:15:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2020-10-29 04:15:14,567 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 55 [2020-10-29 04:15:14,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:14,569 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2020-10-29 04:15:14,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:15:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2020-10-29 04:15:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 04:15:14,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:14,570 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:14,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:15:14,570 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:14,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1165282974, now seen corresponding path program 10 times [2020-10-29 04:15:14,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:14,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017949718] [2020-10-29 04:15:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 04:15:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:15:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:15:19,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:19,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:15:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:15:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 04:15:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:19,831 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 25 [2020-10-29 04:15:19,946 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2020-10-29 04:15:20,081 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-10-29 04:15:20,211 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-10-29 04:15:20,348 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-10-29 04:15:20,488 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-10-29 04:15:20,630 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-10-29 04:15:20,765 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2020-10-29 04:15:20,909 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2020-10-29 04:15:21,179 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 50 [2020-10-29 04:15:21,421 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 49 [2020-10-29 04:15:21,621 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 31 [2020-10-29 04:15:21,836 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 04:15:22,046 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 31 [2020-10-29 04:15:22,259 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 34 [2020-10-29 04:15:22,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:22,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:22,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:22,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:22,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:22,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:22,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:15:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:22,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:15:22,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:22,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:15:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:22,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:15:22,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:22,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:15:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:22,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:15:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:22,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 04:15:22,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017949718] [2020-10-29 04:15:22,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:22,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:15:22,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234978232] [2020-10-29 04:15:22,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:15:22,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:22,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:15:22,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:15:22,488 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 21 states. [2020-10-29 04:15:23,662 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-29 04:15:24,062 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-29 04:15:24,211 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-10-29 04:15:24,371 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-29 04:15:24,543 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-29 04:15:24,701 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-29 04:15:24,862 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-29 04:15:25,223 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-29 04:15:25,462 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-29 04:15:25,647 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-29 04:15:26,327 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-29 04:15:26,688 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-10-29 04:15:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:26,744 INFO L93 Difference]: Finished difference Result 196 states and 225 transitions. [2020-10-29 04:15:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 04:15:26,745 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-29 04:15:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:26,747 INFO L225 Difference]: With dead ends: 196 [2020-10-29 04:15:26,747 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 04:15:26,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=454, Invalid=1616, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:15:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 04:15:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 112. [2020-10-29 04:15:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 04:15:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2020-10-29 04:15:26,776 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 57 [2020-10-29 04:15:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:26,777 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2020-10-29 04:15:26,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:15:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2020-10-29 04:15:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 04:15:26,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:26,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:26,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:15:26,778 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:26,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:26,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1797147355, now seen corresponding path program 11 times [2020-10-29 04:15:26,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:26,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681170280] [2020-10-29 04:15:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:28,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:28,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 04:15:28,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:15:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-10-29 04:15:28,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:28,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:15:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:15:28,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:15:28,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:28,721 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 23 [2020-10-29 04:15:28,873 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-10-29 04:15:29,059 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-10-29 04:15:29,233 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2020-10-29 04:15:29,401 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-29 04:15:29,551 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-29 04:15:29,713 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-10-29 04:15:29,875 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-10-29 04:15:30,041 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-29 04:15:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:30,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:30,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:30,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:30,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:15:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:30,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:30,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:30,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:15:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:30,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:15:30,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:30,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:30,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:15:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:30,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:30,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:30,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:15:30,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:30,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:30,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:30,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:30,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:30,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:15:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:30,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:30,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:30,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:30,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:30,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:15:30,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:30,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:15:30,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681170280] [2020-10-29 04:15:30,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:30,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:15:30,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852866309] [2020-10-29 04:15:30,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:15:30,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:15:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:15:30,431 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 17 states. [2020-10-29 04:15:30,865 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-29 04:15:31,124 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-29 04:15:31,406 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-29 04:15:31,596 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-29 04:15:31,793 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-29 04:15:32,448 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 52 [2020-10-29 04:15:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:33,455 INFO L93 Difference]: Finished difference Result 172 states and 199 transitions. [2020-10-29 04:15:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:15:33,456 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-10-29 04:15:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:33,458 INFO L225 Difference]: With dead ends: 172 [2020-10-29 04:15:33,458 INFO L226 Difference]: Without dead ends: 169 [2020-10-29 04:15:33,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:15:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-29 04:15:33,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 150. [2020-10-29 04:15:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-29 04:15:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2020-10-29 04:15:33,516 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 59 [2020-10-29 04:15:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:33,516 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2020-10-29 04:15:33,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:15:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-10-29 04:15:33,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 04:15:33,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:33,518 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:33,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:15:33,518 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:33,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1498918368, now seen corresponding path program 12 times [2020-10-29 04:15:33,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:33,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033337200] [2020-10-29 04:15:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:33,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:38,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:38,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 04:15:38,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:15:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:15:38,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:38,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:15:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:15:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:15:38,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:38,869 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 23 [2020-10-29 04:15:39,099 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 36 [2020-10-29 04:15:39,283 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 35 [2020-10-29 04:15:39,475 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 35 [2020-10-29 04:15:39,670 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 34 [2020-10-29 04:15:39,871 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 04:15:40,082 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 34 [2020-10-29 04:15:40,294 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 34 [2020-10-29 04:15:40,462 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 30 [2020-10-29 04:15:40,629 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 27 [2020-10-29 04:15:40,925 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 55 [2020-10-29 04:15:43,668 WARN L193 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2020-10-29 04:15:44,160 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 61 [2020-10-29 04:15:44,697 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 66 [2020-10-29 04:15:45,305 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 66 [2020-10-29 04:15:45,624 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 30 [2020-10-29 04:15:45,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:45,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:45,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:45,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:45,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:45,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 04:15:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:45,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:45,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:45,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:15:45,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:45,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:15:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:45,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:45,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:15:45,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:45,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:45,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:15:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:45,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:45,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:15:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:45,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 04:15:45,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033337200] [2020-10-29 04:15:45,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:45,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:15:45,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329426540] [2020-10-29 04:15:45,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:15:45,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:45,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:15:45,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:15:45,933 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 22 states. [2020-10-29 04:15:46,621 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-29 04:15:46,835 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-29 04:15:47,329 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 90 [2020-10-29 04:15:48,077 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 120 [2020-10-29 04:15:48,856 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-10-29 04:15:49,294 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-29 04:15:49,579 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-10-29 04:15:50,105 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-10-29 04:15:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:50,509 INFO L93 Difference]: Finished difference Result 216 states and 250 transitions. [2020-10-29 04:15:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:15:50,510 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 59 [2020-10-29 04:15:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:50,514 INFO L225 Difference]: With dead ends: 216 [2020-10-29 04:15:50,514 INFO L226 Difference]: Without dead ends: 213 [2020-10-29 04:15:50,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 04:15:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-29 04:15:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 200. [2020-10-29 04:15:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-29 04:15:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 232 transitions. [2020-10-29 04:15:50,590 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 232 transitions. Word has length 59 [2020-10-29 04:15:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:50,590 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 232 transitions. [2020-10-29 04:15:50,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:15:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 232 transitions. [2020-10-29 04:15:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 04:15:50,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:50,598 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:50,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:15:50,600 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:50,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1631934905, now seen corresponding path program 13 times [2020-10-29 04:15:50,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:50,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817513754] [2020-10-29 04:15:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:50,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:54,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:15:54,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:15:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3731 [2020-10-29 04:15:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:54,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:15:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:15:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 04:15:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:54,615 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2020-10-29 04:15:54,744 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2020-10-29 04:15:54,892 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2020-10-29 04:15:55,133 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2020-10-29 04:15:55,289 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-29 04:15:55,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:55,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:55,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:55,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:55,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:55,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:15:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:55,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:55,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:55,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:55,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 04:15:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:55,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:55,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:55,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:55,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:55,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:55,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:55,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:15:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:55,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:55,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:55,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:55,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:55,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:55,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:55,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:15:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:55,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:55,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:55,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:55,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:55,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:55,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:15:55,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817513754] [2020-10-29 04:15:55,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:55,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:15:55,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875008312] [2020-10-29 04:15:55,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:15:55,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:55,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:15:55,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:15:55,762 INFO L87 Difference]: Start difference. First operand 200 states and 232 transitions. Second operand 18 states. [2020-10-29 04:15:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:58,002 INFO L93 Difference]: Finished difference Result 291 states and 344 transitions. [2020-10-29 04:15:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:15:58,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-29 04:15:58,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:58,006 INFO L225 Difference]: With dead ends: 291 [2020-10-29 04:15:58,007 INFO L226 Difference]: Without dead ends: 288 [2020-10-29 04:15:58,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:15:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-29 04:15:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 192. [2020-10-29 04:15:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-29 04:15:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 225 transitions. [2020-10-29 04:15:58,070 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 225 transitions. Word has length 61 [2020-10-29 04:15:58,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:58,070 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 225 transitions. [2020-10-29 04:15:58,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:15:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 225 transitions. [2020-10-29 04:15:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 04:15:58,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:58,072 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:58,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:15:58,073 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:58,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:58,073 INFO L82 PathProgramCache]: Analyzing trace with hash -15198, now seen corresponding path program 14 times [2020-10-29 04:15:58,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:58,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772122] [2020-10-29 04:15:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:59,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:03,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:03,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 04:16:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:16:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:16:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:03,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:16:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:16:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:16:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:04,461 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-29 04:16:04,847 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-29 04:16:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:05,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:05,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:05,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:05,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:05,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 04:16:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:05,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:05,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:05,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:05,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:05,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:16:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:05,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:16:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:05,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:05,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:05,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:05,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:05,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:05,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 7 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:16:05,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772122] [2020-10-29 04:16:05,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:05,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:16:05,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423128803] [2020-10-29 04:16:05,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:16:05,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:05,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:16:05,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:16:05,600 INFO L87 Difference]: Start difference. First operand 192 states and 225 transitions. Second operand 25 states. [2020-10-29 04:16:06,359 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-29 04:16:06,671 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-29 04:16:08,179 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-29 04:16:08,646 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-29 04:16:10,789 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-10-29 04:16:11,024 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-29 04:16:11,238 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-29 04:16:11,493 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-29 04:16:11,809 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-10-29 04:16:12,088 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-10-29 04:16:14,842 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-29 04:16:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:15,248 INFO L93 Difference]: Finished difference Result 590 states and 709 transitions. [2020-10-29 04:16:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-29 04:16:15,249 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 61 [2020-10-29 04:16:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:15,254 INFO L225 Difference]: With dead ends: 590 [2020-10-29 04:16:15,254 INFO L226 Difference]: Without dead ends: 511 [2020-10-29 04:16:15,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=710, Invalid=4546, Unknown=0, NotChecked=0, Total=5256 [2020-10-29 04:16:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-29 04:16:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 221. [2020-10-29 04:16:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-29 04:16:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 259 transitions. [2020-10-29 04:16:15,360 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 259 transitions. Word has length 61 [2020-10-29 04:16:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:15,361 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 259 transitions. [2020-10-29 04:16:15,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:16:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 259 transitions. [2020-10-29 04:16:15,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:16:15,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:15,363 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:15,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:16:15,363 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:15,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:15,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1776560407, now seen corresponding path program 15 times [2020-10-29 04:16:15,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:15,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842875999] [2020-10-29 04:16:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:20,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:20,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 04:16:20,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:16:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:16:20,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:20,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:16:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:16:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 04:16:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:20,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:20,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:20,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:20,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:20,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:20,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:16:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:20,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:20,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:20,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:20,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:16:20,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:20,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:16:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:20,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:20,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:20,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:20,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:20,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:20,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:16:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:20,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:20,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:20,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:20,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:20,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:20,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:20,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:16:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:20,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:20,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:20,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:20,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:20,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:20,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:16:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842875999] [2020-10-29 04:16:20,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:20,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:16:20,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046138109] [2020-10-29 04:16:20,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:16:20,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:20,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:16:20,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:16:20,836 INFO L87 Difference]: Start difference. First operand 221 states and 259 transitions. Second operand 15 states. [2020-10-29 04:16:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:22,411 INFO L93 Difference]: Finished difference Result 307 states and 364 transitions. [2020-10-29 04:16:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:16:22,412 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-10-29 04:16:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:22,414 INFO L225 Difference]: With dead ends: 307 [2020-10-29 04:16:22,414 INFO L226 Difference]: Without dead ends: 304 [2020-10-29 04:16:22,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:16:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-29 04:16:22,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 227. [2020-10-29 04:16:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-29 04:16:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 268 transitions. [2020-10-29 04:16:22,508 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 268 transitions. Word has length 63 [2020-10-29 04:16:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:22,509 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 268 transitions. [2020-10-29 04:16:22,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:16:22,509 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 268 transitions. [2020-10-29 04:16:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:16:22,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:22,511 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:22,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 04:16:22,511 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:22,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:22,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1661127964, now seen corresponding path program 16 times [2020-10-29 04:16:22,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:22,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132275074] [2020-10-29 04:16:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:23,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:27,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:27,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:16:27,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:16:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:16:27,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:27,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:16:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:16:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:16:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:27,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:27,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:27,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:27,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:27,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:16:27,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:27,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:27,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:16:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:27,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:27,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:16:27,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:27,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:27,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:27,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:16:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:27,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:27,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:27,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:16:27,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:27,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:16:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:16:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:27,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:27,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:27,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:16:27,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:27,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:16:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 53 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:16:27,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132275074] [2020-10-29 04:16:27,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:27,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:16:27,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179263054] [2020-10-29 04:16:27,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:16:27,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:27,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:16:27,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:16:27,873 INFO L87 Difference]: Start difference. First operand 227 states and 268 transitions. Second operand 16 states. [2020-10-29 04:16:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:29,907 INFO L93 Difference]: Finished difference Result 464 states and 534 transitions. [2020-10-29 04:16:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:16:29,908 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-10-29 04:16:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:29,910 INFO L225 Difference]: With dead ends: 464 [2020-10-29 04:16:29,911 INFO L226 Difference]: Without dead ends: 396 [2020-10-29 04:16:29,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:16:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-29 04:16:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 293. [2020-10-29 04:16:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-29 04:16:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-10-29 04:16:30,011 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 63 [2020-10-29 04:16:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:30,011 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-10-29 04:16:30,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:16:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-10-29 04:16:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 04:16:30,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:30,013 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:30,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 04:16:30,014 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:30,014 INFO L82 PathProgramCache]: Analyzing trace with hash 972252939, now seen corresponding path program 17 times [2020-10-29 04:16:30,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:30,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105538908] [2020-10-29 04:16:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:32,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:33,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:35,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:35,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:16:35,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:16:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:16:35,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:35,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:16:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:16:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 04:16:35,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:35,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:35,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:35,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:35,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:35,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:35,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:35,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:35,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:16:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:35,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:35,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:35,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:35,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:35,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:35,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:16:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:35,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:35,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:35,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:35,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:35,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:35,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:16:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:35,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:35,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:35,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:35,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:35,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:35,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:35,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:35,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:35,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:16:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:35,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:35,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:35,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:35,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:16:35,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105538908] [2020-10-29 04:16:35,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:35,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:16:35,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573450495] [2020-10-29 04:16:35,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:16:35,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:16:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:16:35,788 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 17 states. [2020-10-29 04:16:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:37,783 INFO L93 Difference]: Finished difference Result 330 states and 378 transitions. [2020-10-29 04:16:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:16:37,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-29 04:16:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:37,786 INFO L225 Difference]: With dead ends: 330 [2020-10-29 04:16:37,786 INFO L226 Difference]: Without dead ends: 327 [2020-10-29 04:16:37,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:16:37,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-29 04:16:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 258. [2020-10-29 04:16:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-29 04:16:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 290 transitions. [2020-10-29 04:16:37,891 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 290 transitions. Word has length 65 [2020-10-29 04:16:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:37,891 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 290 transitions. [2020-10-29 04:16:37,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:16:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 290 transitions. [2020-10-29 04:16:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 04:16:37,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:37,893 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:37,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 04:16:37,893 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:37,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1448360710, now seen corresponding path program 18 times [2020-10-29 04:16:37,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:37,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607851122] [2020-10-29 04:16:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:40,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:42,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:16:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:43,467 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-29 04:16:44,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:44,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:44,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:44,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:44,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:44,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:44,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:44,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:44,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:16:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:44,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:44,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:44,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:16:44,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:44,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:44,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:16:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:44,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:44,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:44,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:44,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:44,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:44,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:44,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:16:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:44,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:44,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:44,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:44,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 04:16:44,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607851122] [2020-10-29 04:16:44,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:44,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:16:44,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454931383] [2020-10-29 04:16:44,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:16:44,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:44,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:16:44,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:16:44,060 INFO L87 Difference]: Start difference. First operand 258 states and 290 transitions. Second operand 15 states. [2020-10-29 04:16:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:45,693 INFO L93 Difference]: Finished difference Result 339 states and 385 transitions. [2020-10-29 04:16:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:16:45,693 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-29 04:16:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:45,695 INFO L225 Difference]: With dead ends: 339 [2020-10-29 04:16:45,695 INFO L226 Difference]: Without dead ends: 336 [2020-10-29 04:16:45,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:16:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-29 04:16:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 152. [2020-10-29 04:16:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-29 04:16:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2020-10-29 04:16:45,753 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 65 [2020-10-29 04:16:45,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:45,753 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2020-10-29 04:16:45,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:16:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2020-10-29 04:16:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 04:16:45,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:45,755 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:45,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 04:16:45,755 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:45,756 INFO L82 PathProgramCache]: Analyzing trace with hash 442408596, now seen corresponding path program 19 times [2020-10-29 04:16:45,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:45,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143754089] [2020-10-29 04:16:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:46,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:46,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:47,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:50,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:50,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 04:16:50,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:16:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 04:16:50,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:50,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:16:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:16:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:16:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:51,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:51,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:51,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:16:51,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:51,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:16:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:51,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:51,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:51,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:16:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:16:51,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:51,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 04:16:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:51,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:51,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:51,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:16:51,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:51,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:51,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:16:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:51,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:51,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:51,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:16:51,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:51,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:16:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:51,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:51,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:51,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:16:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:51,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:51,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:51,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:51,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:51,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:16:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 04:16:51,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143754089] [2020-10-29 04:16:51,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:51,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:16:51,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335099949] [2020-10-29 04:16:51,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:16:51,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:51,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:16:51,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:16:51,361 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand 13 states. [2020-10-29 04:16:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:52,830 INFO L93 Difference]: Finished difference Result 240 states and 262 transitions. [2020-10-29 04:16:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:16:52,832 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-29 04:16:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:52,833 INFO L225 Difference]: With dead ends: 240 [2020-10-29 04:16:52,833 INFO L226 Difference]: Without dead ends: 161 [2020-10-29 04:16:52,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:16:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-29 04:16:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 154. [2020-10-29 04:16:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 04:16:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 170 transitions. [2020-10-29 04:16:52,902 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 170 transitions. Word has length 69 [2020-10-29 04:16:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:52,902 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 170 transitions. [2020-10-29 04:16:52,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:16:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 170 transitions. [2020-10-29 04:16:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 04:16:52,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:52,904 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:52,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 04:16:52,905 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:52,905 INFO L82 PathProgramCache]: Analyzing trace with hash 521348406, now seen corresponding path program 20 times [2020-10-29 04:16:52,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:52,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644438298] [2020-10-29 04:16:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:53,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:53,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:55,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:57,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 04:16:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:16:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:16:57,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:57,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:16:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:16:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:16:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:58,247 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2020-10-29 04:16:58,383 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2020-10-29 04:16:58,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:16:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:58,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:16:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:58,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:16:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:58,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:58,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:58,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:58,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:16:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:58,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:58,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:58,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:16:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:58,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:58,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:16:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:58,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:58,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:58,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:16:58,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:58,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:16:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:16:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:58,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:16:58,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:16:58,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:16:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:16:58,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:16:58,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:16:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:16:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:16:58,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:16:58,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:16:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 43 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 04:16:58,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644438298] [2020-10-29 04:16:58,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:16:58,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:16:58,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071868459] [2020-10-29 04:16:58,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:16:58,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:16:58,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:16:58,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:16:58,571 INFO L87 Difference]: Start difference. First operand 154 states and 170 transitions. Second operand 16 states. [2020-10-29 04:16:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:16:59,590 INFO L93 Difference]: Finished difference Result 207 states and 223 transitions. [2020-10-29 04:16:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:16:59,591 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-29 04:16:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:16:59,592 INFO L225 Difference]: With dead ends: 207 [2020-10-29 04:16:59,592 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 04:16:59,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:16:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 04:16:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-29 04:16:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 04:16:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2020-10-29 04:16:59,619 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 71 [2020-10-29 04:16:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:16:59,619 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2020-10-29 04:16:59,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:16:59,619 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2020-10-29 04:16:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 04:16:59,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:16:59,620 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:16:59,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 04:16:59,621 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:16:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:16:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash 194324728, now seen corresponding path program 21 times [2020-10-29 04:16:59,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:16:59,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576209603] [2020-10-29 04:16:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:16:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:16:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:59,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:16:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:02,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:04,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:04,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 04:17:04,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:17:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:17:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:04,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:17:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:17:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 04:17:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:05,111 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2020-10-29 04:17:05,490 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2020-10-29 04:17:05,679 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-10-29 04:17:05,837 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-29 04:17:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:17:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:06,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:06,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:17:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:06,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:17:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:17:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:06,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:17:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:17:06,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:06,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:17:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:06,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:06,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:06,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:17:06,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:06,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:17:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:06,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:06,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:06,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:06,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:06,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:06,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:17:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:06,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:06,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:06,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:06,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:06,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:17:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:06,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:06,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:06,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:06,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:06,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:06,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 04:17:06,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576209603] [2020-10-29 04:17:06,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:17:06,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:17:06,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407968813] [2020-10-29 04:17:06,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:17:06,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:17:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:17:06,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:17:06,458 INFO L87 Difference]: Start difference. First operand 110 states and 117 transitions. Second operand 19 states. [2020-10-29 04:17:07,190 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-29 04:17:07,431 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-29 04:17:07,807 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-29 04:17:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:17:09,568 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2020-10-29 04:17:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:17:09,577 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2020-10-29 04:17:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:17:09,578 INFO L225 Difference]: With dead ends: 142 [2020-10-29 04:17:09,578 INFO L226 Difference]: Without dead ends: 139 [2020-10-29 04:17:09,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=154, Invalid=1106, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 04:17:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-29 04:17:09,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2020-10-29 04:17:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 04:17:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2020-10-29 04:17:09,636 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 73 [2020-10-29 04:17:09,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:17:09,636 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2020-10-29 04:17:09,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:17:09,636 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2020-10-29 04:17:09,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 04:17:09,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:17:09,638 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:17:09,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 04:17:09,638 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:17:09,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:17:09,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1664047462, now seen corresponding path program 22 times [2020-10-29 04:17:09,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:17:09,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746264941] [2020-10-29 04:17:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:17:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:09,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:14,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:14,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 04:17:14,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:17:14,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:17:14,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:14,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:14,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:17:14,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:17:14,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:17:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:15,613 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-10-29 04:17:15,943 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-10-29 04:17:16,325 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2020-10-29 04:17:16,906 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2020-10-29 04:17:17,240 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2020-10-29 04:17:17,751 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-10-29 04:17:18,131 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-10-29 04:17:18,688 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-10-29 04:17:19,119 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2020-10-29 04:17:19,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:17:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:19,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:19,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:17:19,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:17:19,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:19,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:17:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:17:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:19,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:17:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:19,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:19,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:19,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:17:19,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:19,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:17:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:19,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:19,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:17:19,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:19,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:19,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:17:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:19,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:19,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:19,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:19,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:19,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:17:19,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:19,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:19,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:17:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:19,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:19,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:19,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:17:19,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:19,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:19,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:17:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:19,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:19,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:19,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:17:19,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:19,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:17:19,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746264941] [2020-10-29 04:17:19,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:17:19,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 04:17:19,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654710717] [2020-10-29 04:17:19,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 04:17:19,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:17:19,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 04:17:19,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:17:19,721 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 24 states. [2020-10-29 04:17:20,346 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 67 [2020-10-29 04:17:20,951 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 38 [2020-10-29 04:17:21,382 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 74 [2020-10-29 04:17:22,101 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 88 [2020-10-29 04:17:22,933 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 93 [2020-10-29 04:17:24,087 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 96 [2020-10-29 04:17:24,847 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 96 [2020-10-29 04:17:26,126 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 182 DAG size of output: 109 [2020-10-29 04:17:26,850 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 79 [2020-10-29 04:17:27,161 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 37 [2020-10-29 04:17:27,610 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 65 [2020-10-29 04:17:28,441 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 58 [2020-10-29 04:17:29,024 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2020-10-29 04:17:29,578 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2020-10-29 04:17:31,168 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 166 DAG size of output: 108 [2020-10-29 04:17:32,721 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 169 DAG size of output: 111 [2020-10-29 04:17:33,780 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 70 [2020-10-29 04:17:34,626 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 79 [2020-10-29 04:17:35,251 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 81 [2020-10-29 04:17:36,006 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 78 [2020-10-29 04:17:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:17:36,126 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2020-10-29 04:17:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 04:17:36,127 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 75 [2020-10-29 04:17:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:17:36,128 INFO L225 Difference]: With dead ends: 204 [2020-10-29 04:17:36,129 INFO L226 Difference]: Without dead ends: 195 [2020-10-29 04:17:36,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=367, Invalid=1889, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 04:17:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-29 04:17:36,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 172. [2020-10-29 04:17:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-29 04:17:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 189 transitions. [2020-10-29 04:17:36,198 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 189 transitions. Word has length 75 [2020-10-29 04:17:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:17:36,198 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 189 transitions. [2020-10-29 04:17:36,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 04:17:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 189 transitions. [2020-10-29 04:17:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 04:17:36,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:17:36,200 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:17:36,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:17:36,200 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:17:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:17:36,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1387857572, now seen corresponding path program 23 times [2020-10-29 04:17:36,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:17:36,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559660416] [2020-10-29 04:17:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:17:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:36,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:41,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:41,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 04:17:41,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:17:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 04:17:41,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:41,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:17:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:17:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:17:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:42,056 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2020-10-29 04:17:42,231 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-10-29 04:17:42,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:17:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:42,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:17:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:17:42,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:42,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:17:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:17:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 04:17:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:42,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:42,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:42,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:42,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:17:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:42,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:17:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:42,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:42,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:42,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:42,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:42,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:17:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:42,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:42,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 04:17:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:42,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:42,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:42,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:42,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:42,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:42,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 04:17:42,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559660416] [2020-10-29 04:17:42,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:17:42,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:17:42,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634413690] [2020-10-29 04:17:42,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:17:42,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:17:42,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:17:42,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:17:42,944 INFO L87 Difference]: Start difference. First operand 172 states and 189 transitions. Second operand 20 states. [2020-10-29 04:17:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:17:46,433 INFO L93 Difference]: Finished difference Result 235 states and 262 transitions. [2020-10-29 04:17:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:17:46,435 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 77 [2020-10-29 04:17:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:17:46,437 INFO L225 Difference]: With dead ends: 235 [2020-10-29 04:17:46,437 INFO L226 Difference]: Without dead ends: 232 [2020-10-29 04:17:46,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 04:17:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-29 04:17:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 174. [2020-10-29 04:17:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-29 04:17:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 192 transitions. [2020-10-29 04:17:46,498 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 192 transitions. Word has length 77 [2020-10-29 04:17:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:17:46,499 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 192 transitions. [2020-10-29 04:17:46,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:17:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 192 transitions. [2020-10-29 04:17:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 04:17:46,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:17:46,500 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:17:46,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:17:46,501 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:17:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:17:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1682463397, now seen corresponding path program 24 times [2020-10-29 04:17:46,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:17:46,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883609911] [2020-10-29 04:17:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:17:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:49,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:49,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 04:17:49,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:17:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3339 [2020-10-29 04:17:49,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:49,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:49,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:17:49,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:17:49,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 04:17:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:50,340 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-10-29 04:17:50,628 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2020-10-29 04:17:51,093 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 67 [2020-10-29 04:17:51,549 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 58 [2020-10-29 04:17:51,759 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-10-29 04:17:51,971 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-10-29 04:17:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:17:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:53,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:53,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:17:53,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:53,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:17:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:17:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:17:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:17:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:53,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:53,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:53,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:17:53,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:53,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:53,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:53,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:53,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:53,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:53,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:17:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:53,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:53,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:17:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:53,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:53,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:53,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:53,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:53,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:53,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:53,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:17:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 04:17:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:17:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:17:53,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:17:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:17:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 04:17:53,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883609911] [2020-10-29 04:17:53,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:17:53,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:17:53,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958131521] [2020-10-29 04:17:53,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:17:53,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:17:53,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:17:53,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:17:53,121 INFO L87 Difference]: Start difference. First operand 174 states and 192 transitions. Second operand 21 states. [2020-10-29 04:17:53,576 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55