/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-examples/standard_minInArray_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:42:26,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:42:26,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:42:26,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:42:26,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:42:26,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:42:26,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:42:26,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:42:26,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:42:26,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:42:26,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:42:26,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:42:26,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:42:26,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:42:26,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:42:26,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:42:26,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:42:26,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:42:26,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:42:26,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:42:26,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:42:26,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:42:26,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:42:26,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:42:26,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:42:26,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:42:26,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:42:26,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:42:26,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:42:26,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:42:26,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:42:26,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:42:26,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:42:26,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:42:26,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:42:26,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:42:26,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:42:26,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:42:26,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:42:26,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:42:26,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:42:26,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:42:26,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:42:26,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:42:26,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:42:26,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:42:26,176 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:42:26,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:42:26,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:42:26,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:42:26,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:42:26,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:42:26,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:42:26,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:42:26,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:42:26,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:42:26,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:42:26,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:42:26,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:42:26,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:42:26,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:42:26,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:42:26,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:42:26,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:26,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:42:26,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:42:26,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:42:26,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:42:26,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:42:26,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:42:26,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:42:26,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:42:26,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:42:26,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:42:26,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:42:26,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:42:26,589 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:42:26,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_minInArray_ground-1.i [2020-10-29 03:42:26,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba1724c5/ed2279ec801840fd8e9a42d5215cd8a2/FLAG32733d2a2 [2020-10-29 03:42:27,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:42:27,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_minInArray_ground-1.i [2020-10-29 03:42:27,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba1724c5/ed2279ec801840fd8e9a42d5215cd8a2/FLAG32733d2a2 [2020-10-29 03:42:27,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba1724c5/ed2279ec801840fd8e9a42d5215cd8a2 [2020-10-29 03:42:27,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:42:27,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:42:27,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:27,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:42:27,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:42:27,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b87b685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27, skipping insertion in model container [2020-10-29 03:42:27,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:42:27,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:42:27,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:27,851 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:42:27,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:27,888 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:42:27,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27 WrapperNode [2020-10-29 03:42:27,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:27,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:42:27,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:42:27,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:42:27,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (1/1) ... [2020-10-29 03:42:27,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:42:27,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:42:27,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:42:27,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:42:27,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:42:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:42:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:42:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:42:28,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:42:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:42:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:42:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:42:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:42:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:42:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:42:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:42:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:42:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:42:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:42:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:42:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:42:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:42:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:42:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:42:28,260 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:42:28,260 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:42:28,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:28 BoogieIcfgContainer [2020-10-29 03:42:28,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:42:28,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:42:28,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:42:28,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:42:28,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:42:27" (1/3) ... [2020-10-29 03:42:28,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3215f265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:28, skipping insertion in model container [2020-10-29 03:42:28,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:27" (2/3) ... [2020-10-29 03:42:28,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3215f265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:28, skipping insertion in model container [2020-10-29 03:42:28,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:28" (3/3) ... [2020-10-29 03:42:28,271 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-1.i [2020-10-29 03:42:28,284 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:42:28,289 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:42:28,346 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:42:28,408 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:42:28,409 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:42:28,409 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:42:28,409 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:42:28,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:42:28,409 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:42:28,409 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:42:28,410 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:42:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-29 03:42:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:42:28,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:28,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:28,438 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:28,446 INFO L82 PathProgramCache]: Analyzing trace with hash -368075238, now seen corresponding path program 1 times [2020-10-29 03:42:28,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:28,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402382481] [2020-10-29 03:42:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:28,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:42:28,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:28,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 03:42:28,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:28,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:28,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:42:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:28,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:42:29,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:29,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:42:29,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:29,049 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 03:42:29,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402382481] [2020-10-29 03:42:29,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:42:29,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:42:29,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172926359] [2020-10-29 03:42:29,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:42:29,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:29,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:42:29,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:42:29,076 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-29 03:42:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:29,170 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2020-10-29 03:42:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:42:29,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-29 03:42:29,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:29,179 INFO L225 Difference]: With dead ends: 55 [2020-10-29 03:42:29,179 INFO L226 Difference]: Without dead ends: 25 [2020-10-29 03:42:29,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:42:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-29 03:42:29,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-29 03:42:29,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 03:42:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-29 03:42:29,227 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-10-29 03:42:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:29,228 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-29 03:42:29,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:42:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-29 03:42:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:42:29,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:29,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:29,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:42:29,229 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:29,230 INFO L82 PathProgramCache]: Analyzing trace with hash 230860937, now seen corresponding path program 1 times [2020-10-29 03:42:29,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:29,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845022289] [2020-10-29 03:42:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:42:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 03:42:29,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:42:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:29,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:29,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:42:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:29,589 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 03:42:29,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845022289] [2020-10-29 03:42:29,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:42:29,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:42:29,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53735505] [2020-10-29 03:42:29,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:42:29,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:29,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:42:29,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:29,598 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2020-10-29 03:42:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:29,690 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-10-29 03:42:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:42:29,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-29 03:42:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:29,692 INFO L225 Difference]: With dead ends: 41 [2020-10-29 03:42:29,692 INFO L226 Difference]: Without dead ends: 28 [2020-10-29 03:42:29,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-29 03:42:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-29 03:42:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 03:42:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-29 03:42:29,702 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2020-10-29 03:42:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:29,702 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-29 03:42:29,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:42:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-29 03:42:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:42:29,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:29,703 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] [2020-10-29 03:42:29,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:42:29,704 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:29,705 INFO L82 PathProgramCache]: Analyzing trace with hash -139042905, now seen corresponding path program 1 times [2020-10-29 03:42:29,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:29,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093945721] [2020-10-29 03:42:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:42:29,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 03:42:29,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:42:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:42:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:29,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:42:29,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:29,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093945721] [2020-10-29 03:42:29,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:29,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:42:29,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898886319] [2020-10-29 03:42:29,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:42:29,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:29,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:42:29,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:42:29,944 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-10-29 03:42:30,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:30,030 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-29 03:42:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:42:30,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-29 03:42:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:30,032 INFO L225 Difference]: With dead ends: 44 [2020-10-29 03:42:30,032 INFO L226 Difference]: Without dead ends: 31 [2020-10-29 03:42:30,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:42:30,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-29 03:42:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-29 03:42:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:42:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-29 03:42:30,041 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2020-10-29 03:42:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:30,041 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-29 03:42:30,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:42:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-29 03:42:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:42:30,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:30,042 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] [2020-10-29 03:42:30,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:42:30,043 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:30,043 INFO L82 PathProgramCache]: Analyzing trace with hash 941681609, now seen corresponding path program 2 times [2020-10-29 03:42:30,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:30,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668150875] [2020-10-29 03:42:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:30,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:30,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:31,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:31,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:42:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:42:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-29 03:42:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:31,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:42:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:42:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:31,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:31,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:31,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:42:31,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:31,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:31,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668150875] [2020-10-29 03:42:31,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:31,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:42:31,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014055844] [2020-10-29 03:42:31,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:42:31,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:31,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:42:31,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:31,385 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 11 states. [2020-10-29 03:42:31,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:31,710 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-29 03:42:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:42:31,711 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-10-29 03:42:31,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:31,714 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:42:31,714 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:42:31,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:42:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:42:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2020-10-29 03:42:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 03:42:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-29 03:42:31,728 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 23 [2020-10-29 03:42:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:31,728 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-29 03:42:31,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:42:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-29 03:42:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:42:31,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:31,730 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] [2020-10-29 03:42:31,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:42:31,730 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:31,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:31,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1642746187, now seen corresponding path program 1 times [2020-10-29 03:42:31,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:31,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581529150] [2020-10-29 03:42:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:42:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 03:42:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:31,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:42:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:31,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:42:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:31,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:31,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581529150] [2020-10-29 03:42:31,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:31,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:42:31,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589154860] [2020-10-29 03:42:31,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:42:31,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:31,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:42:31,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:42:31,949 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 6 states. [2020-10-29 03:42:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:32,034 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-10-29 03:42:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:42:32,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-29 03:42:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:32,037 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:42:32,037 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:42:32,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:42:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:42:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-29 03:42:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:42:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-29 03:42:32,046 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 23 [2020-10-29 03:42:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:32,047 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-29 03:42:32,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:42:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-29 03:42:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:42:32,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:32,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:32,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:42:32,048 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:32,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1730827367, now seen corresponding path program 3 times [2020-10-29 03:42:32,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:32,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609840318] [2020-10-29 03:42:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:42:33,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:42:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1180 [2020-10-29 03:42:33,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:42:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:42:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:33,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:33,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:33,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609840318] [2020-10-29 03:42:33,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:33,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:42:33,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831840396] [2020-10-29 03:42:33,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:42:33,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:33,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:42:33,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:42:33,492 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 13 states. [2020-10-29 03:42:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:33,942 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-10-29 03:42:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:42:33,942 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-29 03:42:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:33,944 INFO L225 Difference]: With dead ends: 81 [2020-10-29 03:42:33,944 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 03:42:33,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:42:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 03:42:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2020-10-29 03:42:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:42:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-29 03:42:33,959 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 26 [2020-10-29 03:42:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:33,960 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-29 03:42:33,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:42:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-29 03:42:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:42:33,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:33,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:33,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:42:33,961 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:33,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:33,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1420774695, now seen corresponding path program 2 times [2020-10-29 03:42:33,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:33,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897409299] [2020-10-29 03:42:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:34,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:42:34,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:34,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 03:42:34,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:34,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:34,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:42:34,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:34,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:42:34,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:34,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:34,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:34,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:42:34,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:34,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:34,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897409299] [2020-10-29 03:42:34,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:34,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:42:34,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527020834] [2020-10-29 03:42:34,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:42:34,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:42:34,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:42:34,214 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 7 states. [2020-10-29 03:42:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:34,302 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2020-10-29 03:42:34,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:42:34,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-29 03:42:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:34,304 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:42:34,304 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:42:34,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:42:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:42:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-10-29 03:42:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:42:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-29 03:42:34,314 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 26 [2020-10-29 03:42:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:34,314 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-29 03:42:34,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:42:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-29 03:42:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:42:34,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:34,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:34,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:42:34,316 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:34,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:34,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1377274933, now seen corresponding path program 3 times [2020-10-29 03:42:34,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:34,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696372468] [2020-10-29 03:42:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:34,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:34,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:42:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 03:42:34,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:34,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:42:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:42:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:34,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:34,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:42:34,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:34,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:34,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696372468] [2020-10-29 03:42:34,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:34,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:42:34,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117326971] [2020-10-29 03:42:34,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:42:34,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:34,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:42:34,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:42:34,676 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 8 states. [2020-10-29 03:42:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:34,756 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-29 03:42:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:42:34,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-29 03:42:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:34,758 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:42:34,758 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:42:34,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:42:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:42:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-29 03:42:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 03:42:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2020-10-29 03:42:34,767 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 29 [2020-10-29 03:42:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:34,767 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2020-10-29 03:42:34,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:42:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2020-10-29 03:42:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:42:34,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:34,769 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:34,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:42:34,769 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:34,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:34,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1348461913, now seen corresponding path program 4 times [2020-10-29 03:42:34,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:34,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592810042] [2020-10-29 03:42:34,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:35,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:42:35,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 03:42:35,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:35,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:42:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:42:35,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:35,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:35,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:35,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:35,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:35,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:35,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:35,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592810042] [2020-10-29 03:42:35,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:35,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:42:35,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844502338] [2020-10-29 03:42:35,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:42:35,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:35,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:42:35,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:35,112 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand 9 states. [2020-10-29 03:42:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:35,205 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2020-10-29 03:42:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:42:35,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-29 03:42:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:35,207 INFO L225 Difference]: With dead ends: 105 [2020-10-29 03:42:35,207 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 03:42:35,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 03:42:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2020-10-29 03:42:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:42:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2020-10-29 03:42:35,216 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 32 [2020-10-29 03:42:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:35,216 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2020-10-29 03:42:35,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:42:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2020-10-29 03:42:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:42:35,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:35,218 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:35,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:42:35,218 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:35,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1973242293, now seen corresponding path program 5 times [2020-10-29 03:42:35,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:35,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050072394] [2020-10-29 03:42:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:35,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:35,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:42:35,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:35,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 03:42:35,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:35,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:42:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:42:35,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:35,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:35,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:35,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:35,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:35,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050072394] [2020-10-29 03:42:35,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:35,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:42:35,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773601189] [2020-10-29 03:42:35,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:42:35,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:35,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:42:35,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:35,610 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand 10 states. [2020-10-29 03:42:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:35,721 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2020-10-29 03:42:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:42:35,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-29 03:42:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:35,722 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:42:35,722 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:42:35,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:35,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:42:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-10-29 03:42:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 03:42:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2020-10-29 03:42:35,731 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 35 [2020-10-29 03:42:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:35,732 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2020-10-29 03:42:35,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:42:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2020-10-29 03:42:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:42:35,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:35,733 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:35,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:42:35,734 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:35,734 INFO L82 PathProgramCache]: Analyzing trace with hash -417282009, now seen corresponding path program 6 times [2020-10-29 03:42:35,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:35,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281690779] [2020-10-29 03:42:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:36,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:36,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:42:36,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-29 03:42:36,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:36,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:42:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:42:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:36,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:36,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:36,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:36,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:36,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:36,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:36,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:36,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281690779] [2020-10-29 03:42:36,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:36,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:42:36,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265051292] [2020-10-29 03:42:36,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:42:36,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:36,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:42:36,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:36,213 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand 11 states. [2020-10-29 03:42:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:36,306 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2020-10-29 03:42:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:42:36,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-29 03:42:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:36,308 INFO L225 Difference]: With dead ends: 123 [2020-10-29 03:42:36,308 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 03:42:36,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 03:42:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2020-10-29 03:42:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 03:42:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2020-10-29 03:42:36,316 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 38 [2020-10-29 03:42:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:36,316 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2020-10-29 03:42:36,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:42:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2020-10-29 03:42:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:42:36,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:36,318 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:36,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:42:36,318 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:36,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1908480203, now seen corresponding path program 7 times [2020-10-29 03:42:36,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:36,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291280545] [2020-10-29 03:42:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:36,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:36,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:36,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:42:36,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-29 03:42:36,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:36,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:42:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:42:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:36,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:36,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:36,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:36,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:36,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:36,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:36,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291280545] [2020-10-29 03:42:36,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:36,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:42:36,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983799131] [2020-10-29 03:42:36,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:42:36,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:36,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:42:36,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:42:36,851 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand 12 states. [2020-10-29 03:42:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:36,986 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2020-10-29 03:42:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:42:36,986 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-29 03:42:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:36,987 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:42:36,987 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 03:42:36,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:42:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 03:42:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2020-10-29 03:42:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 03:42:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2020-10-29 03:42:37,000 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 41 [2020-10-29 03:42:37,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:37,001 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2020-10-29 03:42:37,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:42:37,001 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2020-10-29 03:42:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:42:37,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:37,004 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:37,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:42:37,005 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash -2016848473, now seen corresponding path program 8 times [2020-10-29 03:42:37,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:37,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644347098] [2020-10-29 03:42:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:37,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:42:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-29 03:42:37,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:37,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:42:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:42:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:37,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:37,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:37,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:37,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:37,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:37,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644347098] [2020-10-29 03:42:37,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:37,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:42:37,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301161019] [2020-10-29 03:42:37,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:42:37,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:37,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:42:37,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:42:37,647 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand 13 states. [2020-10-29 03:42:37,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:37,768 INFO L93 Difference]: Finished difference Result 141 states and 178 transitions. [2020-10-29 03:42:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:42:37,769 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-29 03:42:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:37,770 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:42:37,770 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 03:42:37,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:42:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 03:42:37,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2020-10-29 03:42:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:42:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 146 transitions. [2020-10-29 03:42:37,782 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 146 transitions. Word has length 44 [2020-10-29 03:42:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:37,782 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 146 transitions. [2020-10-29 03:42:37,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:42:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 146 transitions. [2020-10-29 03:42:37,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:42:37,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:37,784 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:37,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:42:37,785 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:37,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:37,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1886100299, now seen corresponding path program 9 times [2020-10-29 03:42:37,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:37,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805796761] [2020-10-29 03:42:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:38,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:38,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:42:38,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 03:42:38,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:38,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:42:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:42:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:38,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:38,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:38,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:38,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:38,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:38,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:38,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805796761] [2020-10-29 03:42:38,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:38,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:42:38,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909183708] [2020-10-29 03:42:38,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:42:38,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:38,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:42:38,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:42:38,471 INFO L87 Difference]: Start difference. First operand 115 states and 146 transitions. Second operand 14 states. [2020-10-29 03:42:38,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:38,596 INFO L93 Difference]: Finished difference Result 150 states and 190 transitions. [2020-10-29 03:42:38,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:42:38,597 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-29 03:42:38,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:38,598 INFO L225 Difference]: With dead ends: 150 [2020-10-29 03:42:38,598 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:42:38,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:42:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:42:38,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2020-10-29 03:42:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-29 03:42:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2020-10-29 03:42:38,607 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 47 [2020-10-29 03:42:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:38,608 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2020-10-29 03:42:38,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:42:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2020-10-29 03:42:38,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:42:38,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:38,609 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:38,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:42:38,610 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1278329639, now seen corresponding path program 10 times [2020-10-29 03:42:38,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:38,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111533544] [2020-10-29 03:42:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:39,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:42:39,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-29 03:42:39,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:39,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:42:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:42:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:39,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:39,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:39,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:39,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111533544] [2020-10-29 03:42:39,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:39,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:42:39,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554185944] [2020-10-29 03:42:39,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:42:39,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:39,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:42:39,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:42:39,383 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand 15 states. [2020-10-29 03:42:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:39,565 INFO L93 Difference]: Finished difference Result 159 states and 202 transitions. [2020-10-29 03:42:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:42:39,566 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-29 03:42:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:39,568 INFO L225 Difference]: With dead ends: 159 [2020-10-29 03:42:39,568 INFO L226 Difference]: Without dead ends: 139 [2020-10-29 03:42:39,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:42:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-29 03:42:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2020-10-29 03:42:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:42:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 170 transitions. [2020-10-29 03:42:39,575 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 170 transitions. Word has length 50 [2020-10-29 03:42:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:39,576 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 170 transitions. [2020-10-29 03:42:39,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:42:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 170 transitions. [2020-10-29 03:42:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:42:39,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:39,577 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:39,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:42:39,577 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:39,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1530249781, now seen corresponding path program 11 times [2020-10-29 03:42:39,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:39,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816637067] [2020-10-29 03:42:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:42:40,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-29 03:42:40,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:42:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:42:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:40,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:40,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:40,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816637067] [2020-10-29 03:42:40,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:40,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:42:40,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808487818] [2020-10-29 03:42:40,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:42:40,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:40,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:42:40,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:42:40,454 INFO L87 Difference]: Start difference. First operand 133 states and 170 transitions. Second operand 16 states. [2020-10-29 03:42:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:40,650 INFO L93 Difference]: Finished difference Result 168 states and 214 transitions. [2020-10-29 03:42:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:42:40,650 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-29 03:42:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:40,651 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:42:40,651 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 03:42:40,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:42:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 03:42:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2020-10-29 03:42:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-29 03:42:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 182 transitions. [2020-10-29 03:42:40,659 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 182 transitions. Word has length 53 [2020-10-29 03:42:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:40,659 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 182 transitions. [2020-10-29 03:42:40,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:42:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 182 transitions. [2020-10-29 03:42:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:42:40,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:40,660 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:40,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:42:40,671 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:40,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1661857625, now seen corresponding path program 12 times [2020-10-29 03:42:40,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:40,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273728465] [2020-10-29 03:42:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:41,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:42:41,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-29 03:42:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:41,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:42:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:42:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:41,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:41,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:41,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:41,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:41,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:41,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:41,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:41,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:41,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:41,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:41,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273728465] [2020-10-29 03:42:41,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:41,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:42:41,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679067597] [2020-10-29 03:42:41,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:42:41,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:41,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:42:41,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:42:41,623 INFO L87 Difference]: Start difference. First operand 142 states and 182 transitions. Second operand 17 states. [2020-10-29 03:42:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:41,828 INFO L93 Difference]: Finished difference Result 177 states and 226 transitions. [2020-10-29 03:42:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:42:41,829 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-29 03:42:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:41,830 INFO L225 Difference]: With dead ends: 177 [2020-10-29 03:42:41,830 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 03:42:41,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:42:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 03:42:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2020-10-29 03:42:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 03:42:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2020-10-29 03:42:41,838 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 56 [2020-10-29 03:42:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:41,838 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2020-10-29 03:42:41,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:42:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2020-10-29 03:42:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:42:41,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:41,839 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:41,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:42:41,840 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:41,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1085996981, now seen corresponding path program 13 times [2020-10-29 03:42:41,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:41,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826451150] [2020-10-29 03:42:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:42,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:42,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:42:42,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-29 03:42:42,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:42,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:42:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:42:42,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:42,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:42,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:42,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:42,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:42,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:42,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:42,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826451150] [2020-10-29 03:42:42,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:42,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:42:42,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982809847] [2020-10-29 03:42:42,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:42:42,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:42,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:42:42,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:42:42,990 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand 18 states. [2020-10-29 03:42:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:43,203 INFO L93 Difference]: Finished difference Result 186 states and 238 transitions. [2020-10-29 03:42:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:42:43,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-29 03:42:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:43,205 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:42:43,205 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 03:42:43,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:42:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 03:42:43,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2020-10-29 03:42:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-29 03:42:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 206 transitions. [2020-10-29 03:42:43,213 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 206 transitions. Word has length 59 [2020-10-29 03:42:43,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:43,213 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 206 transitions. [2020-10-29 03:42:43,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:42:43,214 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 206 transitions. [2020-10-29 03:42:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:42:43,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:43,215 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:43,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:42:43,215 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash 279068199, now seen corresponding path program 14 times [2020-10-29 03:42:43,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:43,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801554828] [2020-10-29 03:42:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:43,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:44,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:42:44,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:44,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-29 03:42:44,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:44,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:42:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:42:44,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:44,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:44,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:44,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:44,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:44,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:44,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:44,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:44,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:44,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801554828] [2020-10-29 03:42:44,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:44,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:42:44,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333376204] [2020-10-29 03:42:44,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:42:44,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:44,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:42:44,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:42:44,353 INFO L87 Difference]: Start difference. First operand 160 states and 206 transitions. Second operand 19 states. [2020-10-29 03:42:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:44,582 INFO L93 Difference]: Finished difference Result 195 states and 250 transitions. [2020-10-29 03:42:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:42:44,583 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-29 03:42:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:44,584 INFO L225 Difference]: With dead ends: 195 [2020-10-29 03:42:44,585 INFO L226 Difference]: Without dead ends: 175 [2020-10-29 03:42:44,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:42:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-29 03:42:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2020-10-29 03:42:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-29 03:42:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 218 transitions. [2020-10-29 03:42:44,594 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 218 transitions. Word has length 62 [2020-10-29 03:42:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:44,595 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 218 transitions. [2020-10-29 03:42:44,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:42:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 218 transitions. [2020-10-29 03:42:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:42:44,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:44,596 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:44,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:42:44,596 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:44,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2109480245, now seen corresponding path program 15 times [2020-10-29 03:42:44,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:44,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519851978] [2020-10-29 03:42:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:45,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:42:45,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:45,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-10-29 03:42:45,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:45,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:42:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:42:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:45,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:45,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:45,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:45,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:45,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:45,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:45,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:45,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519851978] [2020-10-29 03:42:45,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:45,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:42:45,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210275852] [2020-10-29 03:42:45,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:42:45,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:45,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:42:45,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:42:45,812 INFO L87 Difference]: Start difference. First operand 169 states and 218 transitions. Second operand 20 states. [2020-10-29 03:42:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:46,043 INFO L93 Difference]: Finished difference Result 204 states and 262 transitions. [2020-10-29 03:42:46,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:42:46,044 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-29 03:42:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:46,045 INFO L225 Difference]: With dead ends: 204 [2020-10-29 03:42:46,046 INFO L226 Difference]: Without dead ends: 184 [2020-10-29 03:42:46,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:42:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-29 03:42:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2020-10-29 03:42:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 03:42:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 230 transitions. [2020-10-29 03:42:46,055 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 230 transitions. Word has length 65 [2020-10-29 03:42:46,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:46,055 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 230 transitions. [2020-10-29 03:42:46,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:42:46,056 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 230 transitions. [2020-10-29 03:42:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:42:46,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:46,057 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:46,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:42:46,057 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:46,057 INFO L82 PathProgramCache]: Analyzing trace with hash -338015321, now seen corresponding path program 16 times [2020-10-29 03:42:46,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:46,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688761295] [2020-10-29 03:42:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:46,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:47,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:47,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:42:47,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:47,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-29 03:42:47,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:47,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:42:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:47,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 03:42:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:47,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:47,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:47,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:47,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:47,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:47,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:47,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:47,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:47,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:47,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:47,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:47,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688761295] [2020-10-29 03:42:47,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:47,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:42:47,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289141256] [2020-10-29 03:42:47,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:42:47,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:47,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:42:47,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:42:47,531 INFO L87 Difference]: Start difference. First operand 178 states and 230 transitions. Second operand 21 states. [2020-10-29 03:42:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:47,839 INFO L93 Difference]: Finished difference Result 213 states and 274 transitions. [2020-10-29 03:42:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:42:47,839 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2020-10-29 03:42:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:47,841 INFO L225 Difference]: With dead ends: 213 [2020-10-29 03:42:47,841 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 03:42:47,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:42:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 03:42:47,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2020-10-29 03:42:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-29 03:42:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2020-10-29 03:42:47,859 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 68 [2020-10-29 03:42:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:47,859 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2020-10-29 03:42:47,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:42:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2020-10-29 03:42:47,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 03:42:47,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:47,860 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:47,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:42:47,861 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1110369611, now seen corresponding path program 17 times [2020-10-29 03:42:47,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:47,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997858522] [2020-10-29 03:42:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:47,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:48,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:48,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 03:42:48,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-29 03:42:48,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:48,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:42:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:42:48,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:49,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:49,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:49,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:49,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:49,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:49,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997858522] [2020-10-29 03:42:49,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:49,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:42:49,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656489260] [2020-10-29 03:42:49,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:42:49,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:49,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:42:49,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:42:49,296 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand 22 states. [2020-10-29 03:42:49,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:49,529 INFO L93 Difference]: Finished difference Result 222 states and 286 transitions. [2020-10-29 03:42:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:42:49,531 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 71 [2020-10-29 03:42:49,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:49,533 INFO L225 Difference]: With dead ends: 222 [2020-10-29 03:42:49,533 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 03:42:49,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:42:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 03:42:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2020-10-29 03:42:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-29 03:42:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 254 transitions. [2020-10-29 03:42:49,554 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 254 transitions. Word has length 71 [2020-10-29 03:42:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:49,554 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 254 transitions. [2020-10-29 03:42:49,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:42:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 254 transitions. [2020-10-29 03:42:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:42:49,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:49,556 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:49,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:42:49,557 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:49,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:49,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1590544089, now seen corresponding path program 18 times [2020-10-29 03:42:49,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:49,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050699908] [2020-10-29 03:42:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:50,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:42:50,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:50,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-29 03:42:50,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:50,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:42:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:42:50,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:50,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:50,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:50,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:50,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:50,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:50,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050699908] [2020-10-29 03:42:50,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:50,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:42:50,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176909351] [2020-10-29 03:42:50,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:42:50,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:50,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:42:50,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:42:50,984 INFO L87 Difference]: Start difference. First operand 196 states and 254 transitions. Second operand 23 states. [2020-10-29 03:42:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:51,197 INFO L93 Difference]: Finished difference Result 231 states and 298 transitions. [2020-10-29 03:42:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:42:51,198 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 74 [2020-10-29 03:42:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:51,200 INFO L225 Difference]: With dead ends: 231 [2020-10-29 03:42:51,200 INFO L226 Difference]: Without dead ends: 211 [2020-10-29 03:42:51,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:42:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-29 03:42:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2020-10-29 03:42:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-29 03:42:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 266 transitions. [2020-10-29 03:42:51,212 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 266 transitions. Word has length 74 [2020-10-29 03:42:51,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:51,212 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 266 transitions. [2020-10-29 03:42:51,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:42:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 266 transitions. [2020-10-29 03:42:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:42:51,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:51,214 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:51,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:42:51,214 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:51,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:51,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1701709771, now seen corresponding path program 19 times [2020-10-29 03:42:51,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:51,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659683054] [2020-10-29 03:42:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:52,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:42:52,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-29 03:42:52,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:52,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:42:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:42:52,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:52,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:52,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:52,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:52,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659683054] [2020-10-29 03:42:52,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:52,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:42:52,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474210942] [2020-10-29 03:42:52,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:42:52,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:52,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:42:52,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:42:52,864 INFO L87 Difference]: Start difference. First operand 205 states and 266 transitions. Second operand 24 states. [2020-10-29 03:42:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:53,075 INFO L93 Difference]: Finished difference Result 240 states and 310 transitions. [2020-10-29 03:42:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:42:53,075 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 77 [2020-10-29 03:42:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:53,077 INFO L225 Difference]: With dead ends: 240 [2020-10-29 03:42:53,077 INFO L226 Difference]: Without dead ends: 220 [2020-10-29 03:42:53,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:42:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-29 03:42:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2020-10-29 03:42:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-29 03:42:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-10-29 03:42:53,089 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 77 [2020-10-29 03:42:53,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:53,089 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-10-29 03:42:53,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:42:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-10-29 03:42:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:42:53,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:53,090 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:53,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:42:53,093 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:53,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:53,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1363281575, now seen corresponding path program 20 times [2020-10-29 03:42:53,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:53,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66706201] [2020-10-29 03:42:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:53,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:42:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-29 03:42:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:54,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:42:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 03:42:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:54,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:54,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:54,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:54,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:54,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:54,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66706201] [2020-10-29 03:42:54,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:54,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:42:54,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580508605] [2020-10-29 03:42:54,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:42:54,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:54,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:42:54,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:42:54,759 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 25 states. [2020-10-29 03:42:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:55,000 INFO L93 Difference]: Finished difference Result 249 states and 322 transitions. [2020-10-29 03:42:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:42:55,000 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 80 [2020-10-29 03:42:55,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:55,002 INFO L225 Difference]: With dead ends: 249 [2020-10-29 03:42:55,002 INFO L226 Difference]: Without dead ends: 229 [2020-10-29 03:42:55,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:42:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-29 03:42:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2020-10-29 03:42:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-29 03:42:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 290 transitions. [2020-10-29 03:42:55,013 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 290 transitions. Word has length 80 [2020-10-29 03:42:55,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:55,014 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 290 transitions. [2020-10-29 03:42:55,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:42:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 290 transitions. [2020-10-29 03:42:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:42:55,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:55,015 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:55,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:42:55,016 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:55,016 INFO L82 PathProgramCache]: Analyzing trace with hash -462861749, now seen corresponding path program 21 times [2020-10-29 03:42:55,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:55,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561801989] [2020-10-29 03:42:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:42:56,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:56,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:56,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:56,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:56,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:56,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561801989] [2020-10-29 03:42:56,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:56,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:42:56,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645415053] [2020-10-29 03:42:56,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:42:56,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:56,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:42:56,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:42:56,636 INFO L87 Difference]: Start difference. First operand 223 states and 290 transitions. Second operand 26 states. [2020-10-29 03:42:56,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:56,869 INFO L93 Difference]: Finished difference Result 258 states and 334 transitions. [2020-10-29 03:42:56,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:42:56,870 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 83 [2020-10-29 03:42:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:56,872 INFO L225 Difference]: With dead ends: 258 [2020-10-29 03:42:56,872 INFO L226 Difference]: Without dead ends: 238 [2020-10-29 03:42:56,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:42:56,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-29 03:42:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 232. [2020-10-29 03:42:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-29 03:42:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 302 transitions. [2020-10-29 03:42:56,883 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 302 transitions. Word has length 83 [2020-10-29 03:42:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:56,884 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 302 transitions. [2020-10-29 03:42:56,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:42:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 302 transitions. [2020-10-29 03:42:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:42:56,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:56,885 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:56,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:42:56,885 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:56,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1252111399, now seen corresponding path program 22 times [2020-10-29 03:42:56,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:56,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860890758] [2020-10-29 03:42:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:56,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 03:42:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:58,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:58,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:58,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:58,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:58,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:58,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:58,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:58,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:58,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:58,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860890758] [2020-10-29 03:42:58,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:58,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:42:58,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097380040] [2020-10-29 03:42:58,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:42:58,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:58,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:42:58,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:42:58,614 INFO L87 Difference]: Start difference. First operand 232 states and 302 transitions. Second operand 27 states. [2020-10-29 03:42:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:58,944 INFO L93 Difference]: Finished difference Result 267 states and 346 transitions. [2020-10-29 03:42:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:42:58,945 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 86 [2020-10-29 03:42:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:58,948 INFO L225 Difference]: With dead ends: 267 [2020-10-29 03:42:58,948 INFO L226 Difference]: Without dead ends: 247 [2020-10-29 03:42:58,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:42:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-29 03:42:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 241. [2020-10-29 03:42:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 03:42:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2020-10-29 03:42:58,960 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 86 [2020-10-29 03:42:58,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:58,961 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2020-10-29 03:42:58,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:42:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2020-10-29 03:42:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 03:42:58,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:58,962 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:58,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:42:58,962 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash -913789749, now seen corresponding path program 23 times [2020-10-29 03:42:58,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:58,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59785285] [2020-10-29 03:42:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:00,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:00,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 03:43:00,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-29 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:00,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:00,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:00,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:00,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:00,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:00,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:00,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59785285] [2020-10-29 03:43:00,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:00,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:43:00,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636112873] [2020-10-29 03:43:00,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:43:00,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:00,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:43:00,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:43:00,709 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand 28 states. [2020-10-29 03:43:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:00,962 INFO L93 Difference]: Finished difference Result 276 states and 358 transitions. [2020-10-29 03:43:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:43:00,962 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 89 [2020-10-29 03:43:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:00,965 INFO L225 Difference]: With dead ends: 276 [2020-10-29 03:43:00,965 INFO L226 Difference]: Without dead ends: 256 [2020-10-29 03:43:00,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:43:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-29 03:43:00,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2020-10-29 03:43:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-29 03:43:00,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 326 transitions. [2020-10-29 03:43:00,976 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 326 transitions. Word has length 89 [2020-10-29 03:43:00,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:00,977 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 326 transitions. [2020-10-29 03:43:00,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:43:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 326 transitions. [2020-10-29 03:43:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:43:00,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:00,978 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:00,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:43:00,979 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1981202009, now seen corresponding path program 24 times [2020-10-29 03:43:00,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:00,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781351718] [2020-10-29 03:43:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:02,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:02,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:43:02,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:02,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1505 [2020-10-29 03:43:02,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:02,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:43:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 03:43:02,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:03,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:03,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:03,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:03,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:03,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781351718] [2020-10-29 03:43:03,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:03,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:43:03,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020313315] [2020-10-29 03:43:03,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:43:03,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:03,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:43:03,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:43:03,069 INFO L87 Difference]: Start difference. First operand 250 states and 326 transitions. Second operand 29 states. [2020-10-29 03:43:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:03,417 INFO L93 Difference]: Finished difference Result 285 states and 370 transitions. [2020-10-29 03:43:03,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:43:03,417 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 92 [2020-10-29 03:43:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:03,420 INFO L225 Difference]: With dead ends: 285 [2020-10-29 03:43:03,420 INFO L226 Difference]: Without dead ends: 265 [2020-10-29 03:43:03,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:43:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-29 03:43:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2020-10-29 03:43:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-29 03:43:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 338 transitions. [2020-10-29 03:43:03,438 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 338 transitions. Word has length 92 [2020-10-29 03:43:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:03,439 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 338 transitions. [2020-10-29 03:43:03,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:43:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 338 transitions. [2020-10-29 03:43:03,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 03:43:03,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:03,440 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:03,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:43:03,441 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1321980085, now seen corresponding path program 25 times [2020-10-29 03:43:03,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:03,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932490937] [2020-10-29 03:43:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:05,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:05,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:43:05,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:05,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-29 03:43:05,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:05,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:05,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:43:05,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:05,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:43:05,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:05,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:05,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:05,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:05,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:05,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:05,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932490937] [2020-10-29 03:43:05,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:05,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:43:05,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581117916] [2020-10-29 03:43:05,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:43:05,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:05,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:43:05,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:43:05,736 INFO L87 Difference]: Start difference. First operand 259 states and 338 transitions. Second operand 30 states. [2020-10-29 03:43:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:06,125 INFO L93 Difference]: Finished difference Result 294 states and 382 transitions. [2020-10-29 03:43:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:43:06,126 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 95 [2020-10-29 03:43:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:06,128 INFO L225 Difference]: With dead ends: 294 [2020-10-29 03:43:06,129 INFO L226 Difference]: Without dead ends: 274 [2020-10-29 03:43:06,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:43:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-29 03:43:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 268. [2020-10-29 03:43:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-29 03:43:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 350 transitions. [2020-10-29 03:43:06,141 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 350 transitions. Word has length 95 [2020-10-29 03:43:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:06,142 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 350 transitions. [2020-10-29 03:43:06,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:43:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 350 transitions. [2020-10-29 03:43:06,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 03:43:06,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:06,143 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:06,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:43:06,143 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:06,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:06,144 INFO L82 PathProgramCache]: Analyzing trace with hash 967880487, now seen corresponding path program 26 times [2020-10-29 03:43:06,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:06,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333482726] [2020-10-29 03:43:06,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:07,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:07,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:43:07,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:07,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1650 [2020-10-29 03:43:07,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:07,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:07,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:43:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 03:43:07,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:08,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:08,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:08,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:08,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:08,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:08,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:08,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:08,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333482726] [2020-10-29 03:43:08,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:08,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:43:08,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901903103] [2020-10-29 03:43:08,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:43:08,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:08,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:43:08,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:43:08,451 INFO L87 Difference]: Start difference. First operand 268 states and 350 transitions. Second operand 31 states. [2020-10-29 03:43:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:08,693 INFO L93 Difference]: Finished difference Result 303 states and 394 transitions. [2020-10-29 03:43:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:43:08,694 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 98 [2020-10-29 03:43:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:08,696 INFO L225 Difference]: With dead ends: 303 [2020-10-29 03:43:08,696 INFO L226 Difference]: Without dead ends: 283 [2020-10-29 03:43:08,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:43:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-29 03:43:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2020-10-29 03:43:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-29 03:43:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 362 transitions. [2020-10-29 03:43:08,710 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 362 transitions. Word has length 98 [2020-10-29 03:43:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:08,711 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 362 transitions. [2020-10-29 03:43:08,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:43:08,711 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 362 transitions. [2020-10-29 03:43:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:43:08,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:08,712 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:08,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:43:08,713 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:08,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:08,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1238618571, now seen corresponding path program 27 times [2020-10-29 03:43:08,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:08,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862725316] [2020-10-29 03:43:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:10,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:10,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:43:10,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:10,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-10-29 03:43:10,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:10,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:43:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 03:43:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:11,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:11,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:11,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:43:11,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:11,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:11,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862725316] [2020-10-29 03:43:11,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:11,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:43:11,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562753651] [2020-10-29 03:43:11,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:43:11,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:11,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:43:11,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:43:11,091 INFO L87 Difference]: Start difference. First operand 277 states and 362 transitions. Second operand 32 states. [2020-10-29 03:43:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:11,480 INFO L93 Difference]: Finished difference Result 312 states and 406 transitions. [2020-10-29 03:43:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:43:11,480 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 101 [2020-10-29 03:43:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:11,483 INFO L225 Difference]: With dead ends: 312 [2020-10-29 03:43:11,483 INFO L226 Difference]: Without dead ends: 292 [2020-10-29 03:43:11,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:43:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-29 03:43:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 286. [2020-10-29 03:43:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-29 03:43:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 374 transitions. [2020-10-29 03:43:11,502 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 374 transitions. Word has length 101 [2020-10-29 03:43:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:11,502 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 374 transitions. [2020-10-29 03:43:11,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:43:11,503 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 374 transitions. [2020-10-29 03:43:11,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:43:11,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:11,504 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:11,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:43:11,504 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:11,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash 848297127, now seen corresponding path program 28 times [2020-10-29 03:43:11,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:11,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993603586] [2020-10-29 03:43:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:13,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:43:13,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-10-29 03:43:13,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:13,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:43:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 03:43:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:14,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:14,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:14,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:14,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:14,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:14,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993603586] [2020-10-29 03:43:14,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:14,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:43:14,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238693425] [2020-10-29 03:43:14,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:43:14,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:14,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:43:14,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:43:14,122 INFO L87 Difference]: Start difference. First operand 286 states and 374 transitions. Second operand 33 states. [2020-10-29 03:43:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:14,554 INFO L93 Difference]: Finished difference Result 321 states and 418 transitions. [2020-10-29 03:43:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:43:14,555 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 104 [2020-10-29 03:43:14,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:14,558 INFO L225 Difference]: With dead ends: 321 [2020-10-29 03:43:14,558 INFO L226 Difference]: Without dead ends: 301 [2020-10-29 03:43:14,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:43:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-29 03:43:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 295. [2020-10-29 03:43:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-29 03:43:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 386 transitions. [2020-10-29 03:43:14,572 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 386 transitions. Word has length 104 [2020-10-29 03:43:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:14,572 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 386 transitions. [2020-10-29 03:43:14,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:43:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 386 transitions. [2020-10-29 03:43:14,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 03:43:14,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:14,574 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:14,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:43:14,574 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:14,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:14,574 INFO L82 PathProgramCache]: Analyzing trace with hash -741370805, now seen corresponding path program 29 times [2020-10-29 03:43:14,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:14,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918876474] [2020-10-29 03:43:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 03:43:16,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2138 [2020-10-29 03:43:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:16,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:43:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:43:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:17,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:17,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:17,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:17,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:17,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:17,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918876474] [2020-10-29 03:43:17,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:17,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:43:17,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906304359] [2020-10-29 03:43:17,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:43:17,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:17,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:43:17,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:43:17,498 INFO L87 Difference]: Start difference. First operand 295 states and 386 transitions. Second operand 34 states. [2020-10-29 03:43:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:17,929 INFO L93 Difference]: Finished difference Result 330 states and 430 transitions. [2020-10-29 03:43:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:43:17,929 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 107 [2020-10-29 03:43:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:17,932 INFO L225 Difference]: With dead ends: 330 [2020-10-29 03:43:17,932 INFO L226 Difference]: Without dead ends: 310 [2020-10-29 03:43:17,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:43:17,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-29 03:43:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2020-10-29 03:43:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-29 03:43:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 398 transitions. [2020-10-29 03:43:17,947 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 398 transitions. Word has length 107 [2020-10-29 03:43:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:17,947 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 398 transitions. [2020-10-29 03:43:17,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:43:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 398 transitions. [2020-10-29 03:43:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 03:43:17,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:17,949 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:17,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:43:17,949 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:17,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2065639975, now seen corresponding path program 30 times [2020-10-29 03:43:17,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:17,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747043937] [2020-10-29 03:43:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:20,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2246 [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 03:43:20,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:21,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:21,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:21,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747043937] [2020-10-29 03:43:21,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:21,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:43:21,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119939480] [2020-10-29 03:43:21,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:43:21,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:21,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:43:21,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:43:21,069 INFO L87 Difference]: Start difference. First operand 304 states and 398 transitions. Second operand 35 states. [2020-10-29 03:43:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:21,499 INFO L93 Difference]: Finished difference Result 339 states and 442 transitions. [2020-10-29 03:43:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:43:21,500 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 110 [2020-10-29 03:43:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:21,502 INFO L225 Difference]: With dead ends: 339 [2020-10-29 03:43:21,502 INFO L226 Difference]: Without dead ends: 319 [2020-10-29 03:43:21,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:43:21,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-29 03:43:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 313. [2020-10-29 03:43:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-29 03:43:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 410 transitions. [2020-10-29 03:43:21,516 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 410 transitions. Word has length 110 [2020-10-29 03:43:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:21,517 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 410 transitions. [2020-10-29 03:43:21,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:43:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 410 transitions. [2020-10-29 03:43:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 03:43:21,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:21,518 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:21,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:43:21,518 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:21,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1584433461, now seen corresponding path program 31 times [2020-10-29 03:43:21,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:21,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260100068] [2020-10-29 03:43:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:23,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:23,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 03:43:23,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2361 [2020-10-29 03:43:23,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:23,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:43:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 03:43:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:24,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:24,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260100068] [2020-10-29 03:43:24,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:24,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:43:24,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349490211] [2020-10-29 03:43:24,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:43:24,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:24,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:43:24,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:43:24,766 INFO L87 Difference]: Start difference. First operand 313 states and 410 transitions. Second operand 36 states. [2020-10-29 03:43:25,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:25,210 INFO L93 Difference]: Finished difference Result 348 states and 454 transitions. [2020-10-29 03:43:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:43:25,211 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 113 [2020-10-29 03:43:25,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:25,214 INFO L225 Difference]: With dead ends: 348 [2020-10-29 03:43:25,214 INFO L226 Difference]: Without dead ends: 328 [2020-10-29 03:43:25,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:43:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-29 03:43:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 322. [2020-10-29 03:43:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-29 03:43:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 422 transitions. [2020-10-29 03:43:25,226 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 422 transitions. Word has length 113 [2020-10-29 03:43:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:25,227 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 422 transitions. [2020-10-29 03:43:25,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:43:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 422 transitions. [2020-10-29 03:43:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 03:43:25,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:25,228 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:25,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:43:25,228 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:25,229 INFO L82 PathProgramCache]: Analyzing trace with hash -940165209, now seen corresponding path program 32 times [2020-10-29 03:43:25,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:25,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33169905] [2020-10-29 03:43:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:25,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:27,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:27,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:43:27,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2727 [2020-10-29 03:43:27,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:27,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:43:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 03:43:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:28,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:28,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:28,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:28,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:28,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:28,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:28,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33169905] [2020-10-29 03:43:28,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:28,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:43:28,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37993850] [2020-10-29 03:43:28,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:43:28,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:28,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:43:28,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:43:28,879 INFO L87 Difference]: Start difference. First operand 322 states and 422 transitions. Second operand 37 states. [2020-10-29 03:43:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:29,325 INFO L93 Difference]: Finished difference Result 357 states and 466 transitions. [2020-10-29 03:43:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:43:29,326 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 116 [2020-10-29 03:43:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:29,329 INFO L225 Difference]: With dead ends: 357 [2020-10-29 03:43:29,329 INFO L226 Difference]: Without dead ends: 337 [2020-10-29 03:43:29,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:43:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-29 03:43:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 331. [2020-10-29 03:43:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-29 03:43:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 434 transitions. [2020-10-29 03:43:29,345 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 434 transitions. Word has length 116 [2020-10-29 03:43:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:29,346 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 434 transitions. [2020-10-29 03:43:29,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:43:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 434 transitions. [2020-10-29 03:43:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 03:43:29,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:29,347 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:29,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:43:29,347 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:29,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1753515701, now seen corresponding path program 33 times [2020-10-29 03:43:29,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:29,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326663254] [2020-10-29 03:43:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2868 [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 03:43:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:33,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:33,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:33,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:33,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:33,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:33,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:33,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:33,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326663254] [2020-10-29 03:43:33,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:33,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:43:33,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404130595] [2020-10-29 03:43:33,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:43:33,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:33,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:43:33,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:43:33,216 INFO L87 Difference]: Start difference. First operand 331 states and 434 transitions. Second operand 38 states. [2020-10-29 03:43:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:33,722 INFO L93 Difference]: Finished difference Result 366 states and 478 transitions. [2020-10-29 03:43:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:43:33,723 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 119 [2020-10-29 03:43:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:33,726 INFO L225 Difference]: With dead ends: 366 [2020-10-29 03:43:33,726 INFO L226 Difference]: Without dead ends: 346 [2020-10-29 03:43:33,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:43:33,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-29 03:43:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2020-10-29 03:43:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-29 03:43:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 446 transitions. [2020-10-29 03:43:33,741 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 446 transitions. Word has length 119 [2020-10-29 03:43:33,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:33,741 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 446 transitions. [2020-10-29 03:43:33,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:43:33,742 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 446 transitions. [2020-10-29 03:43:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 03:43:33,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:33,743 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:33,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:43:33,743 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:33,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:33,744 INFO L82 PathProgramCache]: Analyzing trace with hash -72538841, now seen corresponding path program 34 times [2020-10-29 03:43:33,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:33,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717320102] [2020-10-29 03:43:33,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:33,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:35,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 03:43:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:36,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:36,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:36,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:36,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:36,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:36,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:36,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717320102] [2020-10-29 03:43:36,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:36,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:43:36,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500497042] [2020-10-29 03:43:36,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:43:36,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:36,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:43:36,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:43:36,781 INFO L87 Difference]: Start difference. First operand 340 states and 446 transitions. Second operand 39 states. [2020-10-29 03:43:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:37,124 INFO L93 Difference]: Finished difference Result 375 states and 490 transitions. [2020-10-29 03:43:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:43:37,125 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 122 [2020-10-29 03:43:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:37,127 INFO L225 Difference]: With dead ends: 375 [2020-10-29 03:43:37,127 INFO L226 Difference]: Without dead ends: 355 [2020-10-29 03:43:37,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:43:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-29 03:43:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 349. [2020-10-29 03:43:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-29 03:43:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 458 transitions. [2020-10-29 03:43:37,142 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 458 transitions. Word has length 122 [2020-10-29 03:43:37,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:37,143 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 458 transitions. [2020-10-29 03:43:37,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:43:37,143 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 458 transitions. [2020-10-29 03:43:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 03:43:37,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:37,144 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:37,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:43:37,145 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:37,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1409573941, now seen corresponding path program 35 times [2020-10-29 03:43:37,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:37,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112950969] [2020-10-29 03:43:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:40,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3123 [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 03:43:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:41,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:41,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:41,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:41,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:41,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112950969] [2020-10-29 03:43:41,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:41,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:43:41,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588725693] [2020-10-29 03:43:41,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:43:41,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:43:41,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:43:41,343 INFO L87 Difference]: Start difference. First operand 349 states and 458 transitions. Second operand 40 states. [2020-10-29 03:43:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:41,641 INFO L93 Difference]: Finished difference Result 384 states and 502 transitions. [2020-10-29 03:43:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:43:41,642 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 125 [2020-10-29 03:43:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:41,645 INFO L225 Difference]: With dead ends: 384 [2020-10-29 03:43:41,645 INFO L226 Difference]: Without dead ends: 364 [2020-10-29 03:43:41,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:43:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-29 03:43:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 358. [2020-10-29 03:43:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-29 03:43:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 470 transitions. [2020-10-29 03:43:41,660 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 470 transitions. Word has length 125 [2020-10-29 03:43:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:41,660 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 470 transitions. [2020-10-29 03:43:41,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:43:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 470 transitions. [2020-10-29 03:43:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 03:43:41,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:41,661 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:41,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:43:41,662 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:41,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1495534937, now seen corresponding path program 36 times [2020-10-29 03:43:41,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:41,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023170873] [2020-10-29 03:43:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:44,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2370 [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 03:43:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:45,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:45,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:45,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:45,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:45,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:45,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:45,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:45,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023170873] [2020-10-29 03:43:45,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:45,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:43:45,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510979701] [2020-10-29 03:43:45,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:43:45,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:45,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:43:45,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:43:45,170 INFO L87 Difference]: Start difference. First operand 358 states and 470 transitions. Second operand 41 states. [2020-10-29 03:43:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:45,573 INFO L93 Difference]: Finished difference Result 393 states and 514 transitions. [2020-10-29 03:43:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:43:45,574 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 128 [2020-10-29 03:43:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:45,576 INFO L225 Difference]: With dead ends: 393 [2020-10-29 03:43:45,576 INFO L226 Difference]: Without dead ends: 373 [2020-10-29 03:43:45,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:43:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-29 03:43:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 367. [2020-10-29 03:43:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-29 03:43:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 482 transitions. [2020-10-29 03:43:45,590 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 482 transitions. Word has length 128 [2020-10-29 03:43:45,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:45,590 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 482 transitions. [2020-10-29 03:43:45,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:43:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 482 transitions. [2020-10-29 03:43:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 03:43:45,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:45,592 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:45,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:43:45,592 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1735908939, now seen corresponding path program 37 times [2020-10-29 03:43:45,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:45,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447983283] [2020-10-29 03:43:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:48,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 03:43:48,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:48,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2563 [2020-10-29 03:43:48,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:48,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:43:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 03:43:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:49,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:49,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:49,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:49,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:49,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:49,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447983283] [2020-10-29 03:43:49,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:49,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:43:49,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127688543] [2020-10-29 03:43:49,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:43:49,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:49,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:43:49,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:43:49,397 INFO L87 Difference]: Start difference. First operand 367 states and 482 transitions. Second operand 42 states. [2020-10-29 03:43:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:49,908 INFO L93 Difference]: Finished difference Result 402 states and 526 transitions. [2020-10-29 03:43:49,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:43:49,909 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 131 [2020-10-29 03:43:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:49,912 INFO L225 Difference]: With dead ends: 402 [2020-10-29 03:43:49,912 INFO L226 Difference]: Without dead ends: 382 [2020-10-29 03:43:49,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:43:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-29 03:43:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 376. [2020-10-29 03:43:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-29 03:43:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 494 transitions. [2020-10-29 03:43:49,927 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 494 transitions. Word has length 131 [2020-10-29 03:43:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:49,927 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 494 transitions. [2020-10-29 03:43:49,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:43:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 494 transitions. [2020-10-29 03:43:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 03:43:49,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:49,929 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:49,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:43:49,929 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:49,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2011520985, now seen corresponding path program 38 times [2020-10-29 03:43:49,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:49,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575346086] [2020-10-29 03:43:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2909 [2020-10-29 03:43:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 03:43:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:54,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:54,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:54,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:54,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:54,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:54,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575346086] [2020-10-29 03:43:54,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:54,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 03:43:54,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980416863] [2020-10-29 03:43:54,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 03:43:54,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:54,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 03:43:54,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:43:54,096 INFO L87 Difference]: Start difference. First operand 376 states and 494 transitions. Second operand 43 states. [2020-10-29 03:43:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:54,424 INFO L93 Difference]: Finished difference Result 411 states and 538 transitions. [2020-10-29 03:43:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 03:43:54,425 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 134 [2020-10-29 03:43:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:54,428 INFO L225 Difference]: With dead ends: 411 [2020-10-29 03:43:54,428 INFO L226 Difference]: Without dead ends: 391 [2020-10-29 03:43:54,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:43:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-29 03:43:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 385. [2020-10-29 03:43:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-29 03:43:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 506 transitions. [2020-10-29 03:43:54,443 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 506 transitions. Word has length 134 [2020-10-29 03:43:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:54,443 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 506 transitions. [2020-10-29 03:43:54,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 03:43:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 506 transitions. [2020-10-29 03:43:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 03:43:54,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:54,445 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:54,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:43:54,445 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:54,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1683505355, now seen corresponding path program 39 times [2020-10-29 03:43:54,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:54,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689085411] [2020-10-29 03:43:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:57,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:57,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 03:43:57,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:43:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2986 [2020-10-29 03:43:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:57,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 03:43:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:43:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 03:43:57,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:58,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:58,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:58,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:58,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:58,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:58,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:58,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:43:58,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689085411] [2020-10-29 03:43:58,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:58,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:43:58,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076411565] [2020-10-29 03:43:58,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:43:58,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:58,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:43:58,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:43:58,737 INFO L87 Difference]: Start difference. First operand 385 states and 506 transitions. Second operand 44 states. [2020-10-29 03:43:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:59,242 INFO L93 Difference]: Finished difference Result 420 states and 550 transitions. [2020-10-29 03:43:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:43:59,243 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 137 [2020-10-29 03:43:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:59,246 INFO L225 Difference]: With dead ends: 420 [2020-10-29 03:43:59,246 INFO L226 Difference]: Without dead ends: 400 [2020-10-29 03:43:59,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:43:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-29 03:43:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 394. [2020-10-29 03:43:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-29 03:43:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 518 transitions. [2020-10-29 03:43:59,259 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 518 transitions. Word has length 137 [2020-10-29 03:43:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:59,260 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 518 transitions. [2020-10-29 03:43:59,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:43:59,260 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 518 transitions. [2020-10-29 03:43:59,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 03:43:59,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:59,262 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:59,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:43:59,262 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:59,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:59,262 INFO L82 PathProgramCache]: Analyzing trace with hash 201403815, now seen corresponding path program 40 times [2020-10-29 03:43:59,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:59,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183338043] [2020-10-29 03:43:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:02,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:02,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:44:02,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:02,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3155 [2020-10-29 03:44:02,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:02,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 03:44:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 03:44:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:03,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:03,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:03,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:03,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:03,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:03,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:03,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:03,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183338043] [2020-10-29 03:44:03,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:03,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 03:44:03,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64504958] [2020-10-29 03:44:03,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 03:44:03,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:03,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 03:44:03,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:44:03,776 INFO L87 Difference]: Start difference. First operand 394 states and 518 transitions. Second operand 45 states. [2020-10-29 03:44:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:04,227 INFO L93 Difference]: Finished difference Result 429 states and 562 transitions. [2020-10-29 03:44:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 03:44:04,227 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 140 [2020-10-29 03:44:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:04,230 INFO L225 Difference]: With dead ends: 429 [2020-10-29 03:44:04,231 INFO L226 Difference]: Without dead ends: 409 [2020-10-29 03:44:04,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:44:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-29 03:44:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 403. [2020-10-29 03:44:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-29 03:44:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 530 transitions. [2020-10-29 03:44:04,244 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 530 transitions. Word has length 140 [2020-10-29 03:44:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:04,245 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 530 transitions. [2020-10-29 03:44:04,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 03:44:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 530 transitions. [2020-10-29 03:44:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 03:44:04,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:04,246 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:04,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:44:04,247 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -821771445, now seen corresponding path program 41 times [2020-10-29 03:44:04,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:04,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10486347] [2020-10-29 03:44:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:04,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:07,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 03:44:07,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-10-29 03:44:07,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:07,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:44:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 03:44:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:09,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:09,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10486347] [2020-10-29 03:44:09,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:09,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:44:09,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643379965] [2020-10-29 03:44:09,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:44:09,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:09,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:44:09,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:44:09,182 INFO L87 Difference]: Start difference. First operand 403 states and 530 transitions. Second operand 46 states. [2020-10-29 03:44:09,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:09,724 INFO L93 Difference]: Finished difference Result 438 states and 574 transitions. [2020-10-29 03:44:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:44:09,725 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 143 [2020-10-29 03:44:09,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:09,728 INFO L225 Difference]: With dead ends: 438 [2020-10-29 03:44:09,728 INFO L226 Difference]: Without dead ends: 418 [2020-10-29 03:44:09,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:44:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-29 03:44:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 412. [2020-10-29 03:44:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-29 03:44:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 542 transitions. [2020-10-29 03:44:09,741 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 542 transitions. Word has length 143 [2020-10-29 03:44:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:09,742 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 542 transitions. [2020-10-29 03:44:09,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:44:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 542 transitions. [2020-10-29 03:44:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 03:44:09,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:09,743 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:09,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:44:09,744 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:09,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:09,744 INFO L82 PathProgramCache]: Analyzing trace with hash -853042393, now seen corresponding path program 42 times [2020-10-29 03:44:09,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:09,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707040206] [2020-10-29 03:44:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:13,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 03:44:13,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:13,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3696 [2020-10-29 03:44:13,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:13,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:13,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 03:44:13,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:13,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 03:44:13,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:14,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:14,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:14,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:14,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:14,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:14,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:14,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707040206] [2020-10-29 03:44:14,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:14,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 03:44:14,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126690507] [2020-10-29 03:44:14,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 03:44:14,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:14,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 03:44:14,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:44:14,943 INFO L87 Difference]: Start difference. First operand 412 states and 542 transitions. Second operand 47 states. [2020-10-29 03:44:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:15,359 INFO L93 Difference]: Finished difference Result 447 states and 586 transitions. [2020-10-29 03:44:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:44:15,359 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 146 [2020-10-29 03:44:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:15,362 INFO L225 Difference]: With dead ends: 447 [2020-10-29 03:44:15,362 INFO L226 Difference]: Without dead ends: 427 [2020-10-29 03:44:15,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:44:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-29 03:44:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 421. [2020-10-29 03:44:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-29 03:44:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 554 transitions. [2020-10-29 03:44:15,375 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 554 transitions. Word has length 146 [2020-10-29 03:44:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:15,376 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 554 transitions. [2020-10-29 03:44:15,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 03:44:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 554 transitions. [2020-10-29 03:44:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 03:44:15,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:15,378 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:15,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:44:15,378 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:15,381 INFO L82 PathProgramCache]: Analyzing trace with hash -437951029, now seen corresponding path program 43 times [2020-10-29 03:44:15,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:15,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507944132] [2020-10-29 03:44:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 03:44:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3915 [2020-10-29 03:44:19,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:19,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 03:44:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 03:44:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:20,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:20,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:20,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:20,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507944132] [2020-10-29 03:44:20,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:20,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:44:20,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226811839] [2020-10-29 03:44:20,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:44:20,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:20,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:44:20,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:44:20,847 INFO L87 Difference]: Start difference. First operand 421 states and 554 transitions. Second operand 48 states. [2020-10-29 03:44:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:21,282 INFO L93 Difference]: Finished difference Result 456 states and 598 transitions. [2020-10-29 03:44:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:44:21,283 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 149 [2020-10-29 03:44:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:21,286 INFO L225 Difference]: With dead ends: 456 [2020-10-29 03:44:21,286 INFO L226 Difference]: Without dead ends: 436 [2020-10-29 03:44:21,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:44:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-29 03:44:21,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 430. [2020-10-29 03:44:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-29 03:44:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 566 transitions. [2020-10-29 03:44:21,299 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 566 transitions. Word has length 149 [2020-10-29 03:44:21,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:21,300 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 566 transitions. [2020-10-29 03:44:21,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:44:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 566 transitions. [2020-10-29 03:44:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 03:44:21,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:21,301 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:21,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:44:21,302 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:21,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:21,302 INFO L82 PathProgramCache]: Analyzing trace with hash 338028711, now seen corresponding path program 44 times [2020-10-29 03:44:21,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:21,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655973878] [2020-10-29 03:44:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:25,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 03:44:25,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:25,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4351 [2020-10-29 03:44:25,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:25,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 03:44:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 03:44:25,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:44:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:27,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:27,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:27,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:27,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:27,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655973878] [2020-10-29 03:44:27,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:27,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 03:44:27,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806587972] [2020-10-29 03:44:27,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 03:44:27,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:27,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 03:44:27,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:44:27,283 INFO L87 Difference]: Start difference. First operand 430 states and 566 transitions. Second operand 49 states. [2020-10-29 03:44:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:27,867 INFO L93 Difference]: Finished difference Result 465 states and 610 transitions. [2020-10-29 03:44:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 03:44:27,868 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 152 [2020-10-29 03:44:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:27,871 INFO L225 Difference]: With dead ends: 465 [2020-10-29 03:44:27,871 INFO L226 Difference]: Without dead ends: 445 [2020-10-29 03:44:27,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:44:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-29 03:44:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 439. [2020-10-29 03:44:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-29 03:44:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 578 transitions. [2020-10-29 03:44:27,885 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 578 transitions. Word has length 152 [2020-10-29 03:44:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:27,885 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 578 transitions. [2020-10-29 03:44:27,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 03:44:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 578 transitions. [2020-10-29 03:44:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 03:44:27,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:27,887 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:27,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 03:44:27,887 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2036475979, now seen corresponding path program 45 times [2020-10-29 03:44:27,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:27,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319341501] [2020-10-29 03:44:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:32,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 03:44:32,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:32,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4570 [2020-10-29 03:44:32,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:32,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 03:44:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 03:44:32,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:34,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:34,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:34,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:44:34,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:34,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:34,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319341501] [2020-10-29 03:44:34,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:34,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:44:34,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617922634] [2020-10-29 03:44:34,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:44:34,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:34,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:44:34,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:44:34,155 INFO L87 Difference]: Start difference. First operand 439 states and 578 transitions. Second operand 50 states. [2020-10-29 03:44:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:34,669 INFO L93 Difference]: Finished difference Result 474 states and 622 transitions. [2020-10-29 03:44:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 03:44:34,670 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 155 [2020-10-29 03:44:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:34,673 INFO L225 Difference]: With dead ends: 474 [2020-10-29 03:44:34,673 INFO L226 Difference]: Without dead ends: 454 [2020-10-29 03:44:34,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:44:34,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-29 03:44:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 448. [2020-10-29 03:44:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-29 03:44:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 590 transitions. [2020-10-29 03:44:34,685 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 590 transitions. Word has length 155 [2020-10-29 03:44:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:34,685 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 590 transitions. [2020-10-29 03:44:34,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:44:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 590 transitions. [2020-10-29 03:44:34,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 03:44:34,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:34,687 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:34,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 03:44:34,687 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:34,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:34,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1469322791, now seen corresponding path program 46 times [2020-10-29 03:44:34,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:34,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439379064] [2020-10-29 03:44:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4971 [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 03:44:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:41,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:41,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:41,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:41,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:41,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:41,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:41,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:41,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439379064] [2020-10-29 03:44:41,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:41,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 03:44:41,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342435263] [2020-10-29 03:44:41,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 03:44:41,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:41,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 03:44:41,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:44:41,425 INFO L87 Difference]: Start difference. First operand 448 states and 590 transitions. Second operand 51 states. [2020-10-29 03:44:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:42,064 INFO L93 Difference]: Finished difference Result 483 states and 634 transitions. [2020-10-29 03:44:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 03:44:42,064 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 158 [2020-10-29 03:44:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:42,068 INFO L225 Difference]: With dead ends: 483 [2020-10-29 03:44:42,068 INFO L226 Difference]: Without dead ends: 463 [2020-10-29 03:44:42,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:44:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-29 03:44:42,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 457. [2020-10-29 03:44:42,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-29 03:44:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 602 transitions. [2020-10-29 03:44:42,084 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 602 transitions. Word has length 158 [2020-10-29 03:44:42,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:42,084 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 602 transitions. [2020-10-29 03:44:42,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-29 03:44:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 602 transitions. [2020-10-29 03:44:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 03:44:42,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:42,088 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:42,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 03:44:42,089 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:42,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1810041547, now seen corresponding path program 47 times [2020-10-29 03:44:42,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:42,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440356871] [2020-10-29 03:44:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:47,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 03:44:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:48,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:48,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:48,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:48,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:48,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:48,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:48,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440356871] [2020-10-29 03:44:48,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:48,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:44:48,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610689674] [2020-10-29 03:44:48,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:44:48,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:48,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:44:48,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:44:48,972 INFO L87 Difference]: Start difference. First operand 457 states and 602 transitions. Second operand 52 states. [2020-10-29 03:44:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:49,405 INFO L93 Difference]: Finished difference Result 492 states and 646 transitions. [2020-10-29 03:44:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 03:44:49,406 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 161 [2020-10-29 03:44:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:49,409 INFO L225 Difference]: With dead ends: 492 [2020-10-29 03:44:49,410 INFO L226 Difference]: Without dead ends: 472 [2020-10-29 03:44:49,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:44:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-29 03:44:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 466. [2020-10-29 03:44:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 03:44:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 614 transitions. [2020-10-29 03:44:49,422 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 614 transitions. Word has length 161 [2020-10-29 03:44:49,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:49,422 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 614 transitions. [2020-10-29 03:44:49,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:44:49,423 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 614 transitions. [2020-10-29 03:44:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 03:44:49,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:49,424 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:49,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 03:44:49,425 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:49,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1140186201, now seen corresponding path program 48 times [2020-10-29 03:44:49,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:49,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788078565] [2020-10-29 03:44:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:54,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:54,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:44:54,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:44:54,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:44:54,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:54,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 03:44:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:44:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 03:44:54,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:56,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:56,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:56,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:56,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3577 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:44:56,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788078565] [2020-10-29 03:44:56,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:56,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-29 03:44:56,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577791650] [2020-10-29 03:44:56,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 03:44:56,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:56,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 03:44:56,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:44:56,358 INFO L87 Difference]: Start difference. First operand 466 states and 614 transitions. Second operand 53 states. [2020-10-29 03:44:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:57,040 INFO L93 Difference]: Finished difference Result 501 states and 658 transitions. [2020-10-29 03:44:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 03:44:57,041 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 164 [2020-10-29 03:44:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:57,044 INFO L225 Difference]: With dead ends: 501 [2020-10-29 03:44:57,044 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 03:44:57,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:44:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 03:44:57,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 475. [2020-10-29 03:44:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-29 03:44:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 626 transitions. [2020-10-29 03:44:57,057 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 626 transitions. Word has length 164 [2020-10-29 03:44:57,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:57,057 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 626 transitions. [2020-10-29 03:44:57,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 03:44:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 626 transitions. [2020-10-29 03:44:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 03:44:57,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:57,059 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:57,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 03:44:57,059 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:57,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash 835718475, now seen corresponding path program 49 times [2020-10-29 03:44:57,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:57,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697305492] [2020-10-29 03:44:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:02,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:02,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 03:45:02,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:45:02,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:45:02,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:02,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 03:45:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:45:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 03:45:02,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:04,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:04,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:04,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:45:04,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:04,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:04,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:04,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697305492] [2020-10-29 03:45:04,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:04,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 03:45:04,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172714521] [2020-10-29 03:45:04,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 03:45:04,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:04,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 03:45:04,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:45:04,061 INFO L87 Difference]: Start difference. First operand 475 states and 626 transitions. Second operand 54 states. [2020-10-29 03:45:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:04,662 INFO L93 Difference]: Finished difference Result 510 states and 670 transitions. [2020-10-29 03:45:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:45:04,663 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 167 [2020-10-29 03:45:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:04,666 INFO L225 Difference]: With dead ends: 510 [2020-10-29 03:45:04,666 INFO L226 Difference]: Without dead ends: 490 [2020-10-29 03:45:04,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:45:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-29 03:45:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 484. [2020-10-29 03:45:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-29 03:45:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 638 transitions. [2020-10-29 03:45:04,679 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 638 transitions. Word has length 167 [2020-10-29 03:45:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:04,679 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 638 transitions. [2020-10-29 03:45:04,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 03:45:04,679 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 638 transitions. [2020-10-29 03:45:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 03:45:04,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:04,681 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:04,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 03:45:04,681 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1809837785, now seen corresponding path program 50 times [2020-10-29 03:45:04,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:04,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451298222] [2020-10-29 03:45:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:04,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:09,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:09,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 03:45:09,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:45:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 03:45:09,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:09,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 03:45:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:45:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 03:45:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:11,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:11,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:11,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:11,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:11,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:11,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451298222] [2020-10-29 03:45:11,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:11,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-29 03:45:11,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712673446] [2020-10-29 03:45:11,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 03:45:11,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:11,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 03:45:11,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:45:11,790 INFO L87 Difference]: Start difference. First operand 484 states and 638 transitions. Second operand 55 states. [2020-10-29 03:45:12,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:12,292 INFO L93 Difference]: Finished difference Result 519 states and 682 transitions. [2020-10-29 03:45:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 03:45:12,292 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 170 [2020-10-29 03:45:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:12,296 INFO L225 Difference]: With dead ends: 519 [2020-10-29 03:45:12,296 INFO L226 Difference]: Without dead ends: 499 [2020-10-29 03:45:12,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:45:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-29 03:45:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 493. [2020-10-29 03:45:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-29 03:45:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 650 transitions. [2020-10-29 03:45:12,309 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 650 transitions. Word has length 170 [2020-10-29 03:45:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:12,309 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 650 transitions. [2020-10-29 03:45:12,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 03:45:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 650 transitions. [2020-10-29 03:45:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 03:45:12,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:12,311 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:12,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 03:45:12,311 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:12,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1368469451, now seen corresponding path program 51 times [2020-10-29 03:45:12,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:12,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809954645] [2020-10-29 03:45:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:45:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 03:45:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:19,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:19,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:19,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:19,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:19,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:19,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809954645] [2020-10-29 03:45:19,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:19,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:45:19,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811696549] [2020-10-29 03:45:19,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:45:19,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:19,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:45:19,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:45:19,489 INFO L87 Difference]: Start difference. First operand 493 states and 650 transitions. Second operand 56 states. [2020-10-29 03:45:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:20,045 INFO L93 Difference]: Finished difference Result 528 states and 694 transitions. [2020-10-29 03:45:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 03:45:20,046 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 173 [2020-10-29 03:45:20,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:20,049 INFO L225 Difference]: With dead ends: 528 [2020-10-29 03:45:20,049 INFO L226 Difference]: Without dead ends: 508 [2020-10-29 03:45:20,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:45:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-29 03:45:20,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 502. [2020-10-29 03:45:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-10-29 03:45:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 662 transitions. [2020-10-29 03:45:20,058 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 662 transitions. Word has length 173 [2020-10-29 03:45:20,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:20,059 INFO L481 AbstractCegarLoop]: Abstraction has 502 states and 662 transitions. [2020-10-29 03:45:20,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:45:20,059 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 662 transitions. [2020-10-29 03:45:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 03:45:20,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:20,061 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:20,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 03:45:20,061 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:20,061 INFO L82 PathProgramCache]: Analyzing trace with hash -529670489, now seen corresponding path program 52 times [2020-10-29 03:45:20,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:20,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617779474] [2020-10-29 03:45:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:25,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 03:45:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:27,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:27,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:27,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:27,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617779474] [2020-10-29 03:45:27,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:27,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 03:45:27,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72609528] [2020-10-29 03:45:27,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 03:45:27,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:27,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 03:45:27,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:45:27,320 INFO L87 Difference]: Start difference. First operand 502 states and 662 transitions. Second operand 57 states. [2020-10-29 03:45:28,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:28,096 INFO L93 Difference]: Finished difference Result 537 states and 706 transitions. [2020-10-29 03:45:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 03:45:28,096 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 176 [2020-10-29 03:45:28,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:28,099 INFO L225 Difference]: With dead ends: 537 [2020-10-29 03:45:28,100 INFO L226 Difference]: Without dead ends: 517 [2020-10-29 03:45:28,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:45:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-29 03:45:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 511. [2020-10-29 03:45:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-29 03:45:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 674 transitions. [2020-10-29 03:45:28,113 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 674 transitions. Word has length 176 [2020-10-29 03:45:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:28,114 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 674 transitions. [2020-10-29 03:45:28,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 03:45:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 674 transitions. [2020-10-29 03:45:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-29 03:45:28,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:28,116 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:28,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-29 03:45:28,116 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:28,116 INFO L82 PathProgramCache]: Analyzing trace with hash -477203893, now seen corresponding path program 53 times [2020-10-29 03:45:28,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:28,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318262584] [2020-10-29 03:45:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 03:45:33,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:35,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:35,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:35,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:35,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:35,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:35,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:35,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:35,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:35,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:35,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:35,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318262584] [2020-10-29 03:45:35,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:35,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 03:45:35,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433704879] [2020-10-29 03:45:35,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 03:45:35,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:35,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 03:45:35,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:45:35,453 INFO L87 Difference]: Start difference. First operand 511 states and 674 transitions. Second operand 58 states. [2020-10-29 03:45:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:36,237 INFO L93 Difference]: Finished difference Result 546 states and 718 transitions. [2020-10-29 03:45:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 03:45:36,238 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 179 [2020-10-29 03:45:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:36,241 INFO L225 Difference]: With dead ends: 546 [2020-10-29 03:45:36,241 INFO L226 Difference]: Without dead ends: 526 [2020-10-29 03:45:36,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:45:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-29 03:45:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 520. [2020-10-29 03:45:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-29 03:45:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 686 transitions. [2020-10-29 03:45:36,251 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 686 transitions. Word has length 179 [2020-10-29 03:45:36,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:36,251 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 686 transitions. [2020-10-29 03:45:36,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 03:45:36,251 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 686 transitions. [2020-10-29 03:45:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 03:45:36,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:36,253 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:36,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-29 03:45:36,253 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:36,253 INFO L82 PathProgramCache]: Analyzing trace with hash -812938201, now seen corresponding path program 54 times [2020-10-29 03:45:36,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:36,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126347405] [2020-10-29 03:45:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:36,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 03:45:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:43,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:43,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:43,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:43,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:43,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:43,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:43,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:43,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126347405] [2020-10-29 03:45:43,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:43,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-29 03:45:43,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992999243] [2020-10-29 03:45:43,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-29 03:45:43,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:43,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-29 03:45:43,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:45:43,729 INFO L87 Difference]: Start difference. First operand 520 states and 686 transitions. Second operand 59 states. [2020-10-29 03:45:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:44,528 INFO L93 Difference]: Finished difference Result 555 states and 730 transitions. [2020-10-29 03:45:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 03:45:44,529 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 182 [2020-10-29 03:45:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:44,532 INFO L225 Difference]: With dead ends: 555 [2020-10-29 03:45:44,532 INFO L226 Difference]: Without dead ends: 535 [2020-10-29 03:45:44,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:45:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-29 03:45:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 529. [2020-10-29 03:45:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-10-29 03:45:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 698 transitions. [2020-10-29 03:45:44,543 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 698 transitions. Word has length 182 [2020-10-29 03:45:44,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:44,543 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 698 transitions. [2020-10-29 03:45:44,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-29 03:45:44,544 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 698 transitions. [2020-10-29 03:45:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 03:45:44,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:44,545 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:44,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-29 03:45:44,546 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:44,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:44,546 INFO L82 PathProgramCache]: Analyzing trace with hash 305124555, now seen corresponding path program 55 times [2020-10-29 03:45:44,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:44,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106241979] [2020-10-29 03:45:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:49,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:49,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 03:45:49,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:45:49,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:45:49,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:49,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-29 03:45:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:45:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 03:45:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:52,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:52,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:45:52,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106241979] [2020-10-29 03:45:52,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:52,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-29 03:45:52,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514901691] [2020-10-29 03:45:52,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-29 03:45:52,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:52,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-29 03:45:52,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:45:52,128 INFO L87 Difference]: Start difference. First operand 529 states and 698 transitions. Second operand 60 states. [2020-10-29 03:45:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:52,976 INFO L93 Difference]: Finished difference Result 564 states and 742 transitions. [2020-10-29 03:45:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 03:45:52,977 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 185 [2020-10-29 03:45:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:52,980 INFO L225 Difference]: With dead ends: 564 [2020-10-29 03:45:52,980 INFO L226 Difference]: Without dead ends: 544 [2020-10-29 03:45:52,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:45:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-29 03:45:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2020-10-29 03:45:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-29 03:45:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 710 transitions. [2020-10-29 03:45:52,993 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 710 transitions. Word has length 185 [2020-10-29 03:45:52,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:52,994 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 710 transitions. [2020-10-29 03:45:52,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-29 03:45:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 710 transitions. [2020-10-29 03:45:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 03:45:52,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:52,996 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:52,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-29 03:45:52,996 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1041308071, now seen corresponding path program 56 times [2020-10-29 03:45:52,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:52,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746120487] [2020-10-29 03:45:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:58,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 03:45:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:00,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:00,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:00,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:00,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:00,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:00,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:00,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:00,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:00,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:00,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746120487] [2020-10-29 03:46:00,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:00,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-29 03:46:00,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459530001] [2020-10-29 03:46:00,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-29 03:46:00,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:00,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-29 03:46:00,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:46:00,594 INFO L87 Difference]: Start difference. First operand 538 states and 710 transitions. Second operand 61 states. [2020-10-29 03:46:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:01,453 INFO L93 Difference]: Finished difference Result 573 states and 754 transitions. [2020-10-29 03:46:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-29 03:46:01,453 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 188 [2020-10-29 03:46:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:01,459 INFO L225 Difference]: With dead ends: 573 [2020-10-29 03:46:01,460 INFO L226 Difference]: Without dead ends: 553 [2020-10-29 03:46:01,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:46:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-29 03:46:01,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 547. [2020-10-29 03:46:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-29 03:46:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 722 transitions. [2020-10-29 03:46:01,485 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 722 transitions. Word has length 188 [2020-10-29 03:46:01,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:01,485 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 722 transitions. [2020-10-29 03:46:01,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-29 03:46:01,486 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 722 transitions. [2020-10-29 03:46:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 03:46:01,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:01,487 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:01,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-29 03:46:01,488 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1713547445, now seen corresponding path program 57 times [2020-10-29 03:46:01,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:01,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561300399] [2020-10-29 03:46:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:06,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:06,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 03:46:06,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:46:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 03:46:06,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:06,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-29 03:46:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:46:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 03:46:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:09,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 0 proven. 5017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:09,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561300399] [2020-10-29 03:46:09,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:09,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-29 03:46:09,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184937829] [2020-10-29 03:46:09,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-29 03:46:09,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:09,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-29 03:46:09,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 03:46:09,235 INFO L87 Difference]: Start difference. First operand 547 states and 722 transitions. Second operand 62 states. [2020-10-29 03:46:10,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:10,100 INFO L93 Difference]: Finished difference Result 582 states and 766 transitions. [2020-10-29 03:46:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-29 03:46:10,101 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 191 [2020-10-29 03:46:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:10,104 INFO L225 Difference]: With dead ends: 582 [2020-10-29 03:46:10,105 INFO L226 Difference]: Without dead ends: 562 [2020-10-29 03:46:10,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 03:46:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-29 03:46:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 556. [2020-10-29 03:46:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-29 03:46:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 734 transitions. [2020-10-29 03:46:10,114 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 734 transitions. Word has length 191 [2020-10-29 03:46:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:10,115 INFO L481 AbstractCegarLoop]: Abstraction has 556 states and 734 transitions. [2020-10-29 03:46:10,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-29 03:46:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 734 transitions. [2020-10-29 03:46:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 03:46:10,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:10,116 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:10,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-29 03:46:10,116 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:10,117 INFO L82 PathProgramCache]: Analyzing trace with hash 915834663, now seen corresponding path program 58 times [2020-10-29 03:46:10,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:10,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935527834] [2020-10-29 03:46:10,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:15,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 03:46:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:46:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:46:15,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:15,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-29 03:46:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:46:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 03:46:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:17,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:17,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935527834] [2020-10-29 03:46:17,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:17,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-29 03:46:17,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006084530] [2020-10-29 03:46:17,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-29 03:46:17,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:17,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-29 03:46:17,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:46:17,933 INFO L87 Difference]: Start difference. First operand 556 states and 734 transitions. Second operand 63 states. [2020-10-29 03:46:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:18,537 INFO L93 Difference]: Finished difference Result 591 states and 778 transitions. [2020-10-29 03:46:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-29 03:46:18,537 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 194 [2020-10-29 03:46:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:18,541 INFO L225 Difference]: With dead ends: 591 [2020-10-29 03:46:18,541 INFO L226 Difference]: Without dead ends: 571 [2020-10-29 03:46:18,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:46:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-10-29 03:46:18,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2020-10-29 03:46:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-10-29 03:46:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 746 transitions. [2020-10-29 03:46:18,553 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 746 transitions. Word has length 194 [2020-10-29 03:46:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:18,554 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 746 transitions. [2020-10-29 03:46:18,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-29 03:46:18,554 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 746 transitions. [2020-10-29 03:46:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 03:46:18,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:18,556 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:18,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-29 03:46:18,556 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1224669643, now seen corresponding path program 59 times [2020-10-29 03:46:18,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:18,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125598781] [2020-10-29 03:46:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:18,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:46:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 03:46:23,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:26,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:26,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:26,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:26,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:26,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:26,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:26,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125598781] [2020-10-29 03:46:26,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:26,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-29 03:46:26,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539510031] [2020-10-29 03:46:26,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-29 03:46:26,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:26,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-29 03:46:26,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 03:46:26,482 INFO L87 Difference]: Start difference. First operand 565 states and 746 transitions. Second operand 64 states.