/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_init9_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:42:16,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:42:16,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:42:16,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:42:16,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:42:16,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:42:16,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:42:16,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:42:16,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:42:16,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:42:16,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:42:16,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:42:16,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:42:16,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:42:16,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:42:16,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:42:16,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:42:16,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:42:16,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:42:16,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:42:16,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:42:16,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:42:16,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:42:16,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:42:16,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:42:16,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:42:16,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:42:16,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:42:16,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:42:16,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:42:16,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:42:16,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:42:16,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:42:16,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:42:16,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:42:16,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:42:16,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:42:16,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:42:16,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:42:16,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:42:16,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:42:16,233 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 03:42:16,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:42:16,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:42:16,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:42:16,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:42:16,286 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:42:16,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:42:16,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:42:16,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:42:16,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:42:16,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:42:16,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:42:16,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:42:16,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:42:16,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:42:16,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:42:16,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:42:16,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:42:16,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:42:16,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:42:16,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:42:16,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:42:16,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:16,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:42:16,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:42:16,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:42:16,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:42:16,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:42:16,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:42:16,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:42:16,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:42:16,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:42:16,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:42:16,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:42:16,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:42:16,795 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:42:16,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init9_ground-2.i [2020-10-29 03:42:16,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a369fff95/e4541325779d4e57aceea0dcd79ade88/FLAGe4550fce2 [2020-10-29 03:42:17,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:42:17,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init9_ground-2.i [2020-10-29 03:42:17,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a369fff95/e4541325779d4e57aceea0dcd79ade88/FLAGe4550fce2 [2020-10-29 03:42:17,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a369fff95/e4541325779d4e57aceea0dcd79ade88 [2020-10-29 03:42:17,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:42:17,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:42:17,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:17,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:42:17,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:42:17,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:17" (1/1) ... [2020-10-29 03:42:17,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abd4cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:17, skipping insertion in model container [2020-10-29 03:42:17,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:17" (1/1) ... [2020-10-29 03:42:17,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:42:17,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:42:18,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:18,263 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:42:18,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:18,344 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:42:18,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18 WrapperNode [2020-10-29 03:42:18,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:18,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:42:18,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:42:18,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:42:18,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (1/1) ... [2020-10-29 03:42:18,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (1/1) ... [2020-10-29 03:42:18,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (1/1) ... [2020-10-29 03:42:18,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (1/1) ... [2020-10-29 03:42:18,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (1/1) ... [2020-10-29 03:42:18,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (1/1) ... [2020-10-29 03:42:18,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (1/1) ... [2020-10-29 03:42:18,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:42:18,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:42:18,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:42:18,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:42:18,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (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 03:42:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:42:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:42:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:42:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:42:18,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:42:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:42:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:42:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:42:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:42:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:42:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:42:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:42:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:42:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:42:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:42:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:42:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:42:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:42:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:42:19,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:42:19,069 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-29 03:42:19,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:19 BoogieIcfgContainer [2020-10-29 03:42:19,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:42:19,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:42:19,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:42:19,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:42:19,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:42:17" (1/3) ... [2020-10-29 03:42:19,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf55e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:19, skipping insertion in model container [2020-10-29 03:42:19,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:18" (2/3) ... [2020-10-29 03:42:19,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf55e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:19, skipping insertion in model container [2020-10-29 03:42:19,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:19" (3/3) ... [2020-10-29 03:42:19,080 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-2.i [2020-10-29 03:42:19,092 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:42:19,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:42:19,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:42:19,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:42:19,137 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:42:19,137 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:42:19,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:42:19,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:42:19,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:42:19,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:42:19,138 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:42:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-29 03:42:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:42:19,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:19,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:19,165 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:19,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:19,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1430342186, now seen corresponding path program 1 times [2020-10-29 03:42:19,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:19,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042527311] [2020-10-29 03:42:19,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:23,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:42:23,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:42:23,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4433 [2020-10-29 03:42:23,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:23,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:42:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:42:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 03:42:23,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:23,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:23,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:23,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:23,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:23,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:23,878 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 03:42:23,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042527311] [2020-10-29 03:42:23,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:42:23,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:42:23,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765719892] [2020-10-29 03:42:23,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:42:23,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:23,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:42:23,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:23,908 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-29 03:42:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:24,212 INFO L93 Difference]: Finished difference Result 87 states and 147 transitions. [2020-10-29 03:42:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:42:24,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 03:42:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:24,224 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:42:24,224 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 03:42:24,230 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 03:42:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 03:42:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-29 03:42:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:42:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-29 03:42:24,296 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 31 [2020-10-29 03:42:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:24,296 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-29 03:42:24,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:42:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-29 03:42:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:42:24,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:24,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:24,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:42:24,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:24,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2143673916, now seen corresponding path program 1 times [2020-10-29 03:42:24,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:24,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32757799] [2020-10-29 03:42:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:42:29,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:42:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:42:29,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:42:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:42:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:42:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:29,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:29,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:29,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:29,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:29,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:29,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:42:29,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32757799] [2020-10-29 03:42:29,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:29,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:42:29,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596437961] [2020-10-29 03:42:29,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:42:29,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:29,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:42:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:42:29,415 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 5 states. [2020-10-29 03:42:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:29,642 INFO L93 Difference]: Finished difference Result 91 states and 117 transitions. [2020-10-29 03:42:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:42:29,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-29 03:42:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:29,645 INFO L225 Difference]: With dead ends: 91 [2020-10-29 03:42:29,645 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:42:29,646 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 03:42:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:42:29,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-29 03:42:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:42:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-10-29 03:42:29,659 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 40 [2020-10-29 03:42:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:29,659 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-10-29 03:42:29,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:42:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-10-29 03:42:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:42:29,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:29,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:29,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:42:29,663 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:29,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:29,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1385563250, now seen corresponding path program 2 times [2020-10-29 03:42:29,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:29,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791125470] [2020-10-29 03:42:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:34,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:42:34,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:42:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:34,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:34,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:42:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:42:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:34,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:34,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:34,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:34,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:34,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:42:34,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791125470] [2020-10-29 03:42:34,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:34,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:42:34,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895021233] [2020-10-29 03:42:34,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:42:34,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:34,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:42:34,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:42:34,805 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 6 states. [2020-10-29 03:42:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:35,073 INFO L93 Difference]: Finished difference Result 108 states and 134 transitions. [2020-10-29 03:42:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:42:35,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-29 03:42:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:35,075 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:42:35,075 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:42:35,076 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 03:42:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:42:35,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-29 03:42:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:42:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-29 03:42:35,088 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 49 [2020-10-29 03:42:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:35,089 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-29 03:42:35,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:42:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-29 03:42:35,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:42:35,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:35,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:35,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:42:35,091 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:35,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:35,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1838870524, now seen corresponding path program 3 times [2020-10-29 03:42:35,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:35,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067482920] [2020-10-29 03:42:35,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:42:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 03:42:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:42:40,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:40,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:40,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:40,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:40,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:40,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-29 03:42:40,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067482920] [2020-10-29 03:42:40,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:40,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:42:40,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180883780] [2020-10-29 03:42:40,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:42:40,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:40,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:42:40,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:42:40,225 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 7 states. [2020-10-29 03:42:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:40,456 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2020-10-29 03:42:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:42:40,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-29 03:42:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:40,458 INFO L225 Difference]: With dead ends: 125 [2020-10-29 03:42:40,458 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:42:40,459 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 03:42:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:42:40,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-29 03:42:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 03:42:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-29 03:42:40,471 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 58 [2020-10-29 03:42:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:40,471 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-29 03:42:40,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:42:40,471 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-29 03:42:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:42:40,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:40,474 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:40,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:42:40,474 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:40,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:40,475 INFO L82 PathProgramCache]: Analyzing trace with hash -632270770, now seen corresponding path program 4 times [2020-10-29 03:42:40,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:40,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525307227] [2020-10-29 03:42:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:45,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:42:45,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:42:45,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:45,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:42:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:42:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:45,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:45,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:45,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:45,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:45,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 03:42:45,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525307227] [2020-10-29 03:42:45,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:45,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:42:45,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849039714] [2020-10-29 03:42:45,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:42:45,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:45,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:42:45,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:42:45,620 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 8 states. [2020-10-29 03:42:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:45,895 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2020-10-29 03:42:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:42:45,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-29 03:42:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:45,897 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:42:45,897 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 03:42:45,898 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 03:42:45,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 03:42:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-29 03:42:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:42:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-29 03:42:45,909 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 67 [2020-10-29 03:42:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:45,909 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-29 03:42:45,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:42:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-29 03:42:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:42:45,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:45,911 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:45,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:42:45,911 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:45,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1934823868, now seen corresponding path program 5 times [2020-10-29 03:42:45,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:45,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319707887] [2020-10-29 03:42:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:50,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:42:50,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:42:50,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:50,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:42:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 03:42:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:42:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:51,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:51,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:51,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-29 03:42:51,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319707887] [2020-10-29 03:42:51,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:51,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:42:51,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884841715] [2020-10-29 03:42:51,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:42:51,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:51,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:42:51,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:51,083 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 9 states. [2020-10-29 03:42:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:51,399 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2020-10-29 03:42:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:42:51,402 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-29 03:42:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:51,403 INFO L225 Difference]: With dead ends: 159 [2020-10-29 03:42:51,403 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:42:51,404 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 03:42:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:42:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-29 03:42:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:42:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-29 03:42:51,416 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 76 [2020-10-29 03:42:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:51,417 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-29 03:42:51,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:42:51,417 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-29 03:42:51,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:42:51,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:51,418 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:51,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:42:51,419 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:51,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1825781006, now seen corresponding path program 6 times [2020-10-29 03:42:51,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:51,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808817565] [2020-10-29 03:42:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:56,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:42:56,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:56,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:56,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:42:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:42:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:42:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:56,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:56,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:42:56,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:56,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-29 03:42:56,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808817565] [2020-10-29 03:42:56,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:56,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:42:56,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787280872] [2020-10-29 03:42:56,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:42:56,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:42:56,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:56,626 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 10 states. [2020-10-29 03:42:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:56,921 INFO L93 Difference]: Finished difference Result 176 states and 202 transitions. [2020-10-29 03:42:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:42:56,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-29 03:42:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:56,925 INFO L225 Difference]: With dead ends: 176 [2020-10-29 03:42:56,925 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 03:42:56,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 03:42:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-29 03:42:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 03:42:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-10-29 03:42:56,938 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 85 [2020-10-29 03:42:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:56,939 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-10-29 03:42:56,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:42:56,939 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-10-29 03:42:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:42:56,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:56,943 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:56,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:42:56,944 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:56,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:56,944 INFO L82 PathProgramCache]: Analyzing trace with hash -773997436, now seen corresponding path program 7 times [2020-10-29 03:42:56,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:56,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117799299] [2020-10-29 03:42:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:01,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:43:01,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:01,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:43:01,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:01,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:43:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:43:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:02,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:02,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:02,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:02,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:02,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:02,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-29 03:43:02,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117799299] [2020-10-29 03:43:02,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:02,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:43:02,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441608238] [2020-10-29 03:43:02,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:43:02,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:02,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:43:02,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:43:02,139 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 11 states. [2020-10-29 03:43:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:02,558 INFO L93 Difference]: Finished difference Result 193 states and 219 transitions. [2020-10-29 03:43:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:43:02,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-10-29 03:43:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:02,561 INFO L225 Difference]: With dead ends: 193 [2020-10-29 03:43:02,561 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:43:02,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:43:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:43:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-29 03:43:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 03:43:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-10-29 03:43:02,573 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 94 [2020-10-29 03:43:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:02,574 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-10-29 03:43:02,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:43:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-10-29 03:43:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 03:43:02,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:02,576 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:02,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:43:02,576 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:02,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:02,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1478928846, now seen corresponding path program 8 times [2020-10-29 03:43:02,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:02,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715719408] [2020-10-29 03:43:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:07,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:07,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 03:43:07,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:07,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:43:07,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:07,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:07,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:43:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:43:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:07,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:07,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:07,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:07,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-29 03:43:07,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715719408] [2020-10-29 03:43:07,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:07,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:43:07,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124943673] [2020-10-29 03:43:07,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:43:07,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:07,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:43:07,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:43:07,769 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 12 states. [2020-10-29 03:43:08,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:08,130 INFO L93 Difference]: Finished difference Result 210 states and 236 transitions. [2020-10-29 03:43:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:43:08,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-10-29 03:43:08,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:08,132 INFO L225 Difference]: With dead ends: 210 [2020-10-29 03:43:08,133 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 03:43:08,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:43:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 03:43:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-29 03:43:08,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:43:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-10-29 03:43:08,153 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 103 [2020-10-29 03:43:08,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:08,153 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-10-29 03:43:08,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:43:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-10-29 03:43:08,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:43:08,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:08,159 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:08,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:43:08,160 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:08,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:08,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1875081924, now seen corresponding path program 9 times [2020-10-29 03:43:08,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:08,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966166650] [2020-10-29 03:43:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:13,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:43:13,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:43:13,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:13,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:43:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:43:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:43:13,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:13,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:13,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:13,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:13,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:13,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:13,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:13,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:13,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-10-29 03:43:13,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966166650] [2020-10-29 03:43:13,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:13,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:43:13,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996198738] [2020-10-29 03:43:13,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:43:13,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:13,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:43:13,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:43:13,356 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 13 states. [2020-10-29 03:43:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:13,743 INFO L93 Difference]: Finished difference Result 227 states and 253 transitions. [2020-10-29 03:43:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:43:13,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112 [2020-10-29 03:43:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:13,744 INFO L225 Difference]: With dead ends: 227 [2020-10-29 03:43:13,744 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:43:13,745 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 03:43:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:43:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-29 03:43:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-29 03:43:13,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2020-10-29 03:43:13,755 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 112 [2020-10-29 03:43:13,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:13,755 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2020-10-29 03:43:13,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:43:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2020-10-29 03:43:13,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:43:13,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:13,757 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:13,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:43:13,757 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:13,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:13,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1535201650, now seen corresponding path program 10 times [2020-10-29 03:43:13,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:13,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798979864] [2020-10-29 03:43:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:18,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:43:18,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:43:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:18,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:43:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:43:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:43:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:18,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:18,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:18,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:18,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:18,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:18,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:18,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2020-10-29 03:43:18,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798979864] [2020-10-29 03:43:18,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:18,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:43:18,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523710635] [2020-10-29 03:43:18,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:43:18,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:18,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:43:18,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:43:18,996 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 14 states. [2020-10-29 03:43:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:19,453 INFO L93 Difference]: Finished difference Result 244 states and 270 transitions. [2020-10-29 03:43:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:43:19,453 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 121 [2020-10-29 03:43:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:19,455 INFO L225 Difference]: With dead ends: 244 [2020-10-29 03:43:19,455 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:43:19,456 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 03:43:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:43:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-29 03:43:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:43:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2020-10-29 03:43:19,475 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 121 [2020-10-29 03:43:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:19,475 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2020-10-29 03:43:19,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:43:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2020-10-29 03:43:19,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:43:19,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:19,477 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:19,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:43:19,478 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:19,478 INFO L82 PathProgramCache]: Analyzing trace with hash -550885116, now seen corresponding path program 11 times [2020-10-29 03:43:19,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:19,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269836311] [2020-10-29 03:43:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:19,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:43:24,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:24,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:24,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:24,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:24,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2020-10-29 03:43:24,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269836311] [2020-10-29 03:43:24,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:24,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:43:24,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400690663] [2020-10-29 03:43:24,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:43:24,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:24,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:43:24,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:43:24,755 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand 15 states. [2020-10-29 03:43:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:25,225 INFO L93 Difference]: Finished difference Result 261 states and 287 transitions. [2020-10-29 03:43:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:43:25,225 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 130 [2020-10-29 03:43:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:25,227 INFO L225 Difference]: With dead ends: 261 [2020-10-29 03:43:25,229 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 03:43:25,231 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 03:43:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 03:43:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-29 03:43:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-29 03:43:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2020-10-29 03:43:25,243 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 130 [2020-10-29 03:43:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:25,243 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2020-10-29 03:43:25,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:43:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2020-10-29 03:43:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:43:25,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:25,246 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:25,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:43:25,246 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:25,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1357954226, now seen corresponding path program 12 times [2020-10-29 03:43:25,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:25,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061894200] [2020-10-29 03:43:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:30,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:43:30,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:43:30,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:30,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:43:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 03:43:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:43:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:30,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:30,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:30,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:30,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2020-10-29 03:43:30,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061894200] [2020-10-29 03:43:30,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:30,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:43:30,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061613421] [2020-10-29 03:43:30,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:43:30,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:30,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:43:30,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:30,542 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 16 states. [2020-10-29 03:43:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:30,999 INFO L93 Difference]: Finished difference Result 278 states and 304 transitions. [2020-10-29 03:43:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:43:31,001 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 139 [2020-10-29 03:43:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:31,002 INFO L225 Difference]: With dead ends: 278 [2020-10-29 03:43:31,002 INFO L226 Difference]: Without dead ends: 153 [2020-10-29 03:43:31,003 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 03:43:31,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-29 03:43:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-10-29 03:43:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-29 03:43:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2020-10-29 03:43:31,011 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 139 [2020-10-29 03:43:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:31,012 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2020-10-29 03:43:31,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:43:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2020-10-29 03:43:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:43:31,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:31,013 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:31,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:43:31,014 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:31,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:31,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1008875708, now seen corresponding path program 13 times [2020-10-29 03:43:31,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:31,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110778939] [2020-10-29 03:43:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:31,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:36,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 03:43:36,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:43:36,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:36,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:43:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:43:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:43:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:36,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:36,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:36,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:36,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2020-10-29 03:43:36,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110778939] [2020-10-29 03:43:36,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:36,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:43:36,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794155240] [2020-10-29 03:43:36,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:43:36,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:36,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:43:36,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:36,337 INFO L87 Difference]: Start difference. First operand 153 states and 162 transitions. Second operand 17 states. [2020-10-29 03:43:36,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:36,795 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2020-10-29 03:43:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:43:36,795 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 148 [2020-10-29 03:43:36,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:36,797 INFO L225 Difference]: With dead ends: 295 [2020-10-29 03:43:36,797 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 03:43:36,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:36,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 03:43:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-29 03:43:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-29 03:43:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-10-29 03:43:36,815 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 148 [2020-10-29 03:43:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:36,816 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-10-29 03:43:36,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:43:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-10-29 03:43:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 03:43:36,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:36,818 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:36,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:43:36,818 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1779197966, now seen corresponding path program 14 times [2020-10-29 03:43:36,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:36,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806220330] [2020-10-29 03:43:36,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:41,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 03:43:41,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 03:43:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:41,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:43:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:43:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:43:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:42,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:42,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:42,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:42,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:42,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:42,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-29 03:43:42,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806220330] [2020-10-29 03:43:42,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:42,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:43:42,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283906514] [2020-10-29 03:43:42,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:43:42,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:42,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:43:42,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:42,186 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 18 states. [2020-10-29 03:43:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:42,774 INFO L93 Difference]: Finished difference Result 312 states and 338 transitions. [2020-10-29 03:43:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:43:42,774 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 157 [2020-10-29 03:43:42,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:42,776 INFO L225 Difference]: With dead ends: 312 [2020-10-29 03:43:42,776 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 03:43:42,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:42,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 03:43:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-29 03:43:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-29 03:43:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2020-10-29 03:43:42,787 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 157 [2020-10-29 03:43:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:42,788 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 180 transitions. [2020-10-29 03:43:42,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:43:42,788 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 180 transitions. [2020-10-29 03:43:42,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 03:43:42,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:42,790 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:42,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:43:42,790 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:42,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1398123132, now seen corresponding path program 15 times [2020-10-29 03:43:42,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:42,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455740440] [2020-10-29 03:43:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:42,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:43,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:43,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:47,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:47,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 03:43:47,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:43:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:47,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:43:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-29 03:43:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:43:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:48,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:48,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:48,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:48,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:48,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:48,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:48,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2020-10-29 03:43:48,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455740440] [2020-10-29 03:43:48,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:48,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:43:48,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000469700] [2020-10-29 03:43:48,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:43:48,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:48,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:43:48,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:48,153 INFO L87 Difference]: Start difference. First operand 171 states and 180 transitions. Second operand 19 states. [2020-10-29 03:43:48,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:48,732 INFO L93 Difference]: Finished difference Result 329 states and 355 transitions. [2020-10-29 03:43:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:43:48,733 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 166 [2020-10-29 03:43:48,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:48,735 INFO L225 Difference]: With dead ends: 329 [2020-10-29 03:43:48,735 INFO L226 Difference]: Without dead ends: 180 [2020-10-29 03:43:48,737 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 03:43:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-29 03:43:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-29 03:43:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-29 03:43:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 189 transitions. [2020-10-29 03:43:48,746 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 189 transitions. Word has length 166 [2020-10-29 03:43:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:48,747 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 189 transitions. [2020-10-29 03:43:48,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:43:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 189 transitions. [2020-10-29 03:43:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 03:43:48,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:48,749 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:48,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:43:48,750 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:48,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1666573106, now seen corresponding path program 16 times [2020-10-29 03:43:48,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:48,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097790019] [2020-10-29 03:43:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:53,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:53,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 03:43:53,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:53,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:43:53,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:53,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:43:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:43:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:54,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:54,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:54,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:54,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:54,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:54,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2020-10-29 03:43:54,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097790019] [2020-10-29 03:43:54,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:54,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:43:54,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905887018] [2020-10-29 03:43:54,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:43:54,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:54,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:43:54,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:54,154 INFO L87 Difference]: Start difference. First operand 180 states and 189 transitions. Second operand 20 states. [2020-10-29 03:43:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:54,721 INFO L93 Difference]: Finished difference Result 346 states and 372 transitions. [2020-10-29 03:43:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:43:54,722 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 175 [2020-10-29 03:43:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:54,724 INFO L225 Difference]: With dead ends: 346 [2020-10-29 03:43:54,724 INFO L226 Difference]: Without dead ends: 189 [2020-10-29 03:43:54,725 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 03:43:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-29 03:43:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2020-10-29 03:43:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 03:43:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 198 transitions. [2020-10-29 03:43:54,734 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 198 transitions. Word has length 175 [2020-10-29 03:43:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:54,735 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 198 transitions. [2020-10-29 03:43:54,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:43:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 198 transitions. [2020-10-29 03:43:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:43:54,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:54,736 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:54,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:43:54,737 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash -748956732, now seen corresponding path program 17 times [2020-10-29 03:43:54,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:54,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906778882] [2020-10-29 03:43:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:55,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:59,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:59,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 03:43:59,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:59,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:43:59,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:59,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:43:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 03:43:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:43:59,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2020-10-29 03:44:00,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906778882] [2020-10-29 03:44:00,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:00,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:44:00,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263068435] [2020-10-29 03:44:00,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:44:00,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:00,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:44:00,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:44:00,152 INFO L87 Difference]: Start difference. First operand 189 states and 198 transitions. Second operand 21 states. [2020-10-29 03:44:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:00,717 INFO L93 Difference]: Finished difference Result 363 states and 389 transitions. [2020-10-29 03:44:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:44:00,718 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 184 [2020-10-29 03:44:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:00,719 INFO L225 Difference]: With dead ends: 363 [2020-10-29 03:44:00,720 INFO L226 Difference]: Without dead ends: 198 [2020-10-29 03:44:00,721 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 03:44:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-29 03:44:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-29 03:44:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-29 03:44:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 207 transitions. [2020-10-29 03:44:00,733 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 207 transitions. Word has length 184 [2020-10-29 03:44:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:00,734 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 207 transitions. [2020-10-29 03:44:00,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:44:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 207 transitions. [2020-10-29 03:44:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 03:44:00,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:00,735 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:00,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:44:00,736 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:00,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:00,736 INFO L82 PathProgramCache]: Analyzing trace with hash 589062542, now seen corresponding path program 18 times [2020-10-29 03:44:00,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:00,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69582915] [2020-10-29 03:44:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:01,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:01,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:44:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:06,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2020-10-29 03:44:06,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69582915] [2020-10-29 03:44:06,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:06,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:44:06,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197484515] [2020-10-29 03:44:06,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:44:06,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:44:06,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:44:06,192 INFO L87 Difference]: Start difference. First operand 198 states and 207 transitions. Second operand 22 states. [2020-10-29 03:44:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:06,853 INFO L93 Difference]: Finished difference Result 380 states and 406 transitions. [2020-10-29 03:44:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:44:06,854 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 193 [2020-10-29 03:44:06,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:06,855 INFO L225 Difference]: With dead ends: 380 [2020-10-29 03:44:06,855 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 03:44:06,856 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 03:44:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 03:44:06,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-10-29 03:44:06,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-29 03:44:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 216 transitions. [2020-10-29 03:44:06,880 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 216 transitions. Word has length 193 [2020-10-29 03:44:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:06,880 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 216 transitions. [2020-10-29 03:44:06,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:44:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 216 transitions. [2020-10-29 03:44:06,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:44:06,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:06,882 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:06,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:44:06,882 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:06,882 INFO L82 PathProgramCache]: Analyzing trace with hash -591511036, now seen corresponding path program 19 times [2020-10-29 03:44:06,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:06,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387022044] [2020-10-29 03:44:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:11,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:11,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 03:44:11,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 03:44:11,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:11,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:44:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 03:44:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:44:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:12,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2020-10-29 03:44:12,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387022044] [2020-10-29 03:44:12,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:12,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:44:12,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878182997] [2020-10-29 03:44:12,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:44:12,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:12,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:44:12,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:44:12,415 INFO L87 Difference]: Start difference. First operand 207 states and 216 transitions. Second operand 23 states. [2020-10-29 03:44:13,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:13,074 INFO L93 Difference]: Finished difference Result 397 states and 423 transitions. [2020-10-29 03:44:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:44:13,074 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 202 [2020-10-29 03:44:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:13,076 INFO L225 Difference]: With dead ends: 397 [2020-10-29 03:44:13,076 INFO L226 Difference]: Without dead ends: 216 [2020-10-29 03:44:13,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:44:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-29 03:44:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-29 03:44:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-29 03:44:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2020-10-29 03:44:13,088 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 202 [2020-10-29 03:44:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:13,088 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2020-10-29 03:44:13,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:44:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2020-10-29 03:44:13,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 03:44:13,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:13,090 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:13,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:44:13,090 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:13,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:13,091 INFO L82 PathProgramCache]: Analyzing trace with hash 781661774, now seen corresponding path program 20 times [2020-10-29 03:44:13,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:13,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451438022] [2020-10-29 03:44:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:13,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:44:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:18,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:18,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:18,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:18,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:18,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2020-10-29 03:44:18,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451438022] [2020-10-29 03:44:18,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:18,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:44:18,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709460831] [2020-10-29 03:44:18,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:44:18,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:44:18,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:18,608 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand 24 states. [2020-10-29 03:44:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:19,326 INFO L93 Difference]: Finished difference Result 414 states and 440 transitions. [2020-10-29 03:44:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:44:19,327 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 211 [2020-10-29 03:44:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:19,329 INFO L225 Difference]: With dead ends: 414 [2020-10-29 03:44:19,329 INFO L226 Difference]: Without dead ends: 225 [2020-10-29 03:44:19,331 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 03:44:19,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-29 03:44:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2020-10-29 03:44:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-29 03:44:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 234 transitions. [2020-10-29 03:44:19,344 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 234 transitions. Word has length 211 [2020-10-29 03:44:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:19,344 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 234 transitions. [2020-10-29 03:44:19,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:44:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 234 transitions. [2020-10-29 03:44:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 03:44:19,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:19,346 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:19,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:44:19,346 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:19,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:19,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1734500284, now seen corresponding path program 21 times [2020-10-29 03:44:19,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:19,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935987067] [2020-10-29 03:44:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:19,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:20,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:24,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 03:44:24,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:24,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:44:24,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:24,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:44:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:44:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:44:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2079 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2020-10-29 03:44:24,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935987067] [2020-10-29 03:44:24,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:24,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:44:24,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104207832] [2020-10-29 03:44:24,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:44:24,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:24,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:44:24,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:24,936 INFO L87 Difference]: Start difference. First operand 225 states and 234 transitions. Second operand 25 states. [2020-10-29 03:44:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:25,623 INFO L93 Difference]: Finished difference Result 431 states and 457 transitions. [2020-10-29 03:44:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:44:25,627 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 220 [2020-10-29 03:44:25,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:25,628 INFO L225 Difference]: With dead ends: 431 [2020-10-29 03:44:25,628 INFO L226 Difference]: Without dead ends: 234 [2020-10-29 03:44:25,629 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 03:44:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-29 03:44:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-29 03:44:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-29 03:44:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 243 transitions. [2020-10-29 03:44:25,638 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 243 transitions. Word has length 220 [2020-10-29 03:44:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:25,638 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 243 transitions. [2020-10-29 03:44:25,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:44:25,638 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 243 transitions. [2020-10-29 03:44:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 03:44:25,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:25,640 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:25,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:44:25,640 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:25,641 INFO L82 PathProgramCache]: Analyzing trace with hash -2058446066, now seen corresponding path program 22 times [2020-10-29 03:44:25,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:25,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14702078] [2020-10-29 03:44:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:26,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:30,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:30,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 03:44:30,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:44:30,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:30,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:44:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:44:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:44:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:31,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:31,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:31,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:31,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:44:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:31,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:44:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2020-10-29 03:44:31,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14702078] [2020-10-29 03:44:31,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:31,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:44:31,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119148671] [2020-10-29 03:44:31,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:44:31,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:31,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:44:31,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:31,391 INFO L87 Difference]: Start difference. First operand 234 states and 243 transitions. Second operand 26 states. [2020-10-29 03:44:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:32,003 INFO L93 Difference]: Finished difference Result 448 states and 474 transitions. [2020-10-29 03:44:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:44:32,004 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 229 [2020-10-29 03:44:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:32,006 INFO L225 Difference]: With dead ends: 448 [2020-10-29 03:44:32,006 INFO L226 Difference]: Without dead ends: 243 [2020-10-29 03:44:32,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-29 03:44:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-10-29 03:44:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-29 03:44:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 252 transitions. [2020-10-29 03:44:32,018 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 252 transitions. Word has length 229 [2020-10-29 03:44:32,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:32,018 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 252 transitions. [2020-10-29 03:44:32,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:44:32,018 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 252 transitions. [2020-10-29 03:44:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 03:44:32,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:32,020 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:32,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:44:32,020 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:32,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:32,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1043992956, now seen corresponding path program 23 times [2020-10-29 03:44:32,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:32,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024158249] [2020-10-29 03:44:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:37,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:37,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 03:44:37,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:37,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 03:44:37,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:37,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:44:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 03:44:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:44:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:37,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:37,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:37,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:37,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:37,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2484 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 2208 trivial. 0 not checked. [2020-10-29 03:44:37,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024158249] [2020-10-29 03:44:37,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:37,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:44:37,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653330721] [2020-10-29 03:44:37,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:44:37,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:37,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:44:37,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:37,824 INFO L87 Difference]: Start difference. First operand 243 states and 252 transitions. Second operand 27 states. [2020-10-29 03:44:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:38,541 INFO L93 Difference]: Finished difference Result 465 states and 491 transitions. [2020-10-29 03:44:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:44:38,542 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 238 [2020-10-29 03:44:38,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:38,544 INFO L225 Difference]: With dead ends: 465 [2020-10-29 03:44:38,544 INFO L226 Difference]: Without dead ends: 252 [2020-10-29 03:44:38,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:38,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-29 03:44:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-29 03:44:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-29 03:44:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 261 transitions. [2020-10-29 03:44:38,555 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 261 transitions. Word has length 238 [2020-10-29 03:44:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:38,555 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 261 transitions. [2020-10-29 03:44:38,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:44:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 261 transitions. [2020-10-29 03:44:38,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 03:44:38,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:38,557 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:38,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:44:38,559 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:38,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1032417330, now seen corresponding path program 24 times [2020-10-29 03:44:38,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:38,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298979498] [2020-10-29 03:44:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:43,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:44:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:44,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:44,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:44,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:44,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:44,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2020-10-29 03:44:44,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298979498] [2020-10-29 03:44:44,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:44,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:44:44,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26252154] [2020-10-29 03:44:44,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:44:44,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:44,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:44:44,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:44,261 INFO L87 Difference]: Start difference. First operand 252 states and 261 transitions. Second operand 28 states. [2020-10-29 03:44:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:45,058 INFO L93 Difference]: Finished difference Result 482 states and 508 transitions. [2020-10-29 03:44:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:44:45,059 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 247 [2020-10-29 03:44:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:45,061 INFO L225 Difference]: With dead ends: 482 [2020-10-29 03:44:45,061 INFO L226 Difference]: Without dead ends: 261 [2020-10-29 03:44:45,062 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 03:44:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-29 03:44:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-29 03:44:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-29 03:44:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 270 transitions. [2020-10-29 03:44:45,073 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 270 transitions. Word has length 247 [2020-10-29 03:44:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:45,073 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 270 transitions. [2020-10-29 03:44:45,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:44:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 270 transitions. [2020-10-29 03:44:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 03:44:45,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:45,075 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:45,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:44:45,075 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:45,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1107088188, now seen corresponding path program 25 times [2020-10-29 03:44:45,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:45,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034113830] [2020-10-29 03:44:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:50,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 03:44:50,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:44:50,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:50,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:44:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 03:44:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:44:50,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:50,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:50,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:50,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:44:50,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:50,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2600 trivial. 0 not checked. [2020-10-29 03:44:50,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034113830] [2020-10-29 03:44:50,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:50,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:44:50,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118467370] [2020-10-29 03:44:50,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:44:50,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:50,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:44:50,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:50,870 INFO L87 Difference]: Start difference. First operand 261 states and 270 transitions. Second operand 29 states. [2020-10-29 03:44:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:51,641 INFO L93 Difference]: Finished difference Result 499 states and 525 transitions. [2020-10-29 03:44:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:44:51,642 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 256 [2020-10-29 03:44:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:51,644 INFO L225 Difference]: With dead ends: 499 [2020-10-29 03:44:51,644 INFO L226 Difference]: Without dead ends: 270 [2020-10-29 03:44:51,645 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 03:44:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-29 03:44:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-10-29 03:44:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-29 03:44:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 279 transitions. [2020-10-29 03:44:51,656 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 279 transitions. Word has length 256 [2020-10-29 03:44:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:51,656 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 279 transitions. [2020-10-29 03:44:51,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:44:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 279 transitions. [2020-10-29 03:44:51,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 03:44:51,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:51,658 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:51,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:44:51,658 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1773988722, now seen corresponding path program 26 times [2020-10-29 03:44:51,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:51,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107580539] [2020-10-29 03:44:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:53,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:56,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:56,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 03:44:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:44:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 03:44:56,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:56,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:44:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-29 03:44:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:44:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:57,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:57,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:57,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:57,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3159 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2020-10-29 03:44:57,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107580539] [2020-10-29 03:44:57,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:57,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:44:57,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110453913] [2020-10-29 03:44:57,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:44:57,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:57,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:44:57,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:57,495 INFO L87 Difference]: Start difference. First operand 270 states and 279 transitions. Second operand 30 states. [2020-10-29 03:44:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:58,336 INFO L93 Difference]: Finished difference Result 516 states and 542 transitions. [2020-10-29 03:44:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:44:58,337 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 265 [2020-10-29 03:44:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:58,338 INFO L225 Difference]: With dead ends: 516 [2020-10-29 03:44:58,338 INFO L226 Difference]: Without dead ends: 279 [2020-10-29 03:44:58,340 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 03:44:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-29 03:44:58,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2020-10-29 03:44:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-29 03:44:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 288 transitions. [2020-10-29 03:44:58,350 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 288 transitions. Word has length 265 [2020-10-29 03:44:58,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:58,350 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 288 transitions. [2020-10-29 03:44:58,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:44:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 288 transitions. [2020-10-29 03:44:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 03:44:58,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:58,352 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:58,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:44:58,352 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:58,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1579244292, now seen corresponding path program 27 times [2020-10-29 03:44:58,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:58,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380807301] [2020-10-29 03:44:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:03,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:45:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:04,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:04,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:04,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:04,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3402 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3024 trivial. 0 not checked. [2020-10-29 03:45:04,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380807301] [2020-10-29 03:45:04,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:04,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:45:04,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516433223] [2020-10-29 03:45:04,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:45:04,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:04,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:45:04,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:45:04,222 INFO L87 Difference]: Start difference. First operand 279 states and 288 transitions. Second operand 31 states. [2020-10-29 03:45:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:05,143 INFO L93 Difference]: Finished difference Result 533 states and 559 transitions. [2020-10-29 03:45:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:45:05,143 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 274 [2020-10-29 03:45:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:05,146 INFO L225 Difference]: With dead ends: 533 [2020-10-29 03:45:05,146 INFO L226 Difference]: Without dead ends: 288 [2020-10-29 03:45:05,147 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 03:45:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-29 03:45:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2020-10-29 03:45:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-29 03:45:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 297 transitions. [2020-10-29 03:45:05,157 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 297 transitions. Word has length 274 [2020-10-29 03:45:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:05,158 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 297 transitions. [2020-10-29 03:45:05,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:45:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 297 transitions. [2020-10-29 03:45:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-29 03:45:05,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:05,160 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:05,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:45:05,160 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash 99101006, now seen corresponding path program 28 times [2020-10-29 03:45:05,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:05,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826574409] [2020-10-29 03:45:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:10,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:10,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-29 03:45:10,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:10,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 03:45:10,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:10,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:45:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 03:45:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:45:10,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:11,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:11,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:11,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:11,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:11,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:11,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:11,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3654 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3248 trivial. 0 not checked. [2020-10-29 03:45:11,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826574409] [2020-10-29 03:45:11,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:11,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:45:11,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865530636] [2020-10-29 03:45:11,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:45:11,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:11,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:45:11,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:45:11,059 INFO L87 Difference]: Start difference. First operand 288 states and 297 transitions. Second operand 32 states. [2020-10-29 03:45:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:12,030 INFO L93 Difference]: Finished difference Result 550 states and 576 transitions. [2020-10-29 03:45:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:45:12,031 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 283 [2020-10-29 03:45:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:12,033 INFO L225 Difference]: With dead ends: 550 [2020-10-29 03:45:12,033 INFO L226 Difference]: Without dead ends: 297 [2020-10-29 03:45:12,035 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 03:45:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-29 03:45:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2020-10-29 03:45:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-29 03:45:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 306 transitions. [2020-10-29 03:45:12,046 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 306 transitions. Word has length 283 [2020-10-29 03:45:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:12,046 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 306 transitions. [2020-10-29 03:45:12,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:45:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 306 transitions. [2020-10-29 03:45:12,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-29 03:45:12,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:12,048 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:12,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:45:12,048 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1645446844, now seen corresponding path program 29 times [2020-10-29 03:45:12,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:12,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317992033] [2020-10-29 03:45:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:17,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-29 03:45:17,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:17,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 03:45:17,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:17,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:45:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 03:45:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:45:17,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3915 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3480 trivial. 0 not checked. [2020-10-29 03:45:18,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317992033] [2020-10-29 03:45:18,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:18,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:45:18,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181066271] [2020-10-29 03:45:18,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:45:18,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:18,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:45:18,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:18,033 INFO L87 Difference]: Start difference. First operand 297 states and 306 transitions. Second operand 33 states. [2020-10-29 03:45:18,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:18,865 INFO L93 Difference]: Finished difference Result 567 states and 593 transitions. [2020-10-29 03:45:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:45:18,866 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 292 [2020-10-29 03:45:18,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:18,868 INFO L225 Difference]: With dead ends: 567 [2020-10-29 03:45:18,868 INFO L226 Difference]: Without dead ends: 306 [2020-10-29 03:45:18,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-29 03:45:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-10-29 03:45:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-29 03:45:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 315 transitions. [2020-10-29 03:45:18,881 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 315 transitions. Word has length 292 [2020-10-29 03:45:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:18,881 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 315 transitions. [2020-10-29 03:45:18,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:45:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 315 transitions. [2020-10-29 03:45:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 03:45:18,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:18,884 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:18,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:45:18,884 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:18,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1415983602, now seen corresponding path program 30 times [2020-10-29 03:45:18,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:18,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354453801] [2020-10-29 03:45:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:23,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:45:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:24,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:24,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:24,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:24,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:24,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:24,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3720 trivial. 0 not checked. [2020-10-29 03:45:24,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354453801] [2020-10-29 03:45:24,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:24,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:45:24,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410722582] [2020-10-29 03:45:24,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:45:24,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:24,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:45:24,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:24,860 INFO L87 Difference]: Start difference. First operand 306 states and 315 transitions. Second operand 34 states. [2020-10-29 03:45:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:25,790 INFO L93 Difference]: Finished difference Result 584 states and 610 transitions. [2020-10-29 03:45:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:45:25,791 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 301 [2020-10-29 03:45:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:25,794 INFO L225 Difference]: With dead ends: 584 [2020-10-29 03:45:25,794 INFO L226 Difference]: Without dead ends: 315 [2020-10-29 03:45:25,796 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 03:45:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-29 03:45:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2020-10-29 03:45:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-29 03:45:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 324 transitions. [2020-10-29 03:45:25,807 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 324 transitions. Word has length 301 [2020-10-29 03:45:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:25,807 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 324 transitions. [2020-10-29 03:45:25,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:45:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 324 transitions. [2020-10-29 03:45:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 03:45:25,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:25,810 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:25,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:45:25,810 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:25,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1680902020, now seen corresponding path program 31 times [2020-10-29 03:45:25,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:25,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275271852] [2020-10-29 03:45:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:30,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:30,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-29 03:45:30,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:30,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:45:30,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:30,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:45:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-29 03:45:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:45:30,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:31,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:31,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:31,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:31,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:31,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4464 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3968 trivial. 0 not checked. [2020-10-29 03:45:31,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275271852] [2020-10-29 03:45:31,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:31,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:45:31,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784117205] [2020-10-29 03:45:31,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:45:31,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:31,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:45:31,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:31,877 INFO L87 Difference]: Start difference. First operand 315 states and 324 transitions. Second operand 35 states. [2020-10-29 03:45:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:32,808 INFO L93 Difference]: Finished difference Result 601 states and 627 transitions. [2020-10-29 03:45:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:45:32,809 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 310 [2020-10-29 03:45:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:32,812 INFO L225 Difference]: With dead ends: 601 [2020-10-29 03:45:32,812 INFO L226 Difference]: Without dead ends: 324 [2020-10-29 03:45:32,814 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 03:45:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-29 03:45:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2020-10-29 03:45:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-29 03:45:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 333 transitions. [2020-10-29 03:45:32,825 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 333 transitions. Word has length 310 [2020-10-29 03:45:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:32,825 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 333 transitions. [2020-10-29 03:45:32,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:45:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 333 transitions. [2020-10-29 03:45:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 03:45:32,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:32,828 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:32,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:45:32,828 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:32,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:32,828 INFO L82 PathProgramCache]: Analyzing trace with hash -158596402, now seen corresponding path program 32 times [2020-10-29 03:45:32,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:32,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905989058] [2020-10-29 03:45:32,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:38,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:38,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 03:45:38,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 03:45:38,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:38,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:45:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 03:45:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:45:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:38,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:38,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:38,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:38,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:38,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4752 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 4224 trivial. 0 not checked. [2020-10-29 03:45:39,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905989058] [2020-10-29 03:45:39,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:39,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:45:39,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326104773] [2020-10-29 03:45:39,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:45:39,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:39,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:45:39,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:39,017 INFO L87 Difference]: Start difference. First operand 324 states and 333 transitions. Second operand 36 states. [2020-10-29 03:45:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:40,093 INFO L93 Difference]: Finished difference Result 618 states and 644 transitions. [2020-10-29 03:45:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:45:40,094 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 319 [2020-10-29 03:45:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:40,096 INFO L225 Difference]: With dead ends: 618 [2020-10-29 03:45:40,096 INFO L226 Difference]: Without dead ends: 333 [2020-10-29 03:45:40,097 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 03:45:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-29 03:45:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2020-10-29 03:45:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-29 03:45:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 342 transitions. [2020-10-29 03:45:40,108 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 342 transitions. Word has length 319 [2020-10-29 03:45:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:40,108 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 342 transitions. [2020-10-29 03:45:40,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:45:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 342 transitions. [2020-10-29 03:45:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 03:45:40,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:40,110 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:40,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:45:40,111 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1119454660, now seen corresponding path program 33 times [2020-10-29 03:45:40,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:40,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933754163] [2020-10-29 03:45:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:40,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:45,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-29 03:45:45,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:45:45,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:45,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:45:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 03:45:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:45:45,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:46,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:46,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5049 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4488 trivial. 0 not checked. [2020-10-29 03:45:46,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933754163] [2020-10-29 03:45:46,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:46,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:45:46,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45515011] [2020-10-29 03:45:46,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:45:46,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:46,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:45:46,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:46,255 INFO L87 Difference]: Start difference. First operand 333 states and 342 transitions. Second operand 37 states. [2020-10-29 03:45:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:47,310 INFO L93 Difference]: Finished difference Result 635 states and 661 transitions. [2020-10-29 03:45:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:45:47,312 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 328 [2020-10-29 03:45:47,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:47,314 INFO L225 Difference]: With dead ends: 635 [2020-10-29 03:45:47,315 INFO L226 Difference]: Without dead ends: 342 [2020-10-29 03:45:47,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-29 03:45:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-10-29 03:45:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-29 03:45:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 351 transitions. [2020-10-29 03:45:47,326 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 351 transitions. Word has length 328 [2020-10-29 03:45:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:47,327 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 351 transitions. [2020-10-29 03:45:47,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:45:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 351 transitions. [2020-10-29 03:45:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-29 03:45:47,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:47,330 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:47,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:45:47,330 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1794295694, now seen corresponding path program 34 times [2020-10-29 03:45:47,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:47,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791665069] [2020-10-29 03:45:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:52,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:45:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:53,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:53,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:53,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:53,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:45:53,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:53,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5355 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 4760 trivial. 0 not checked. [2020-10-29 03:45:53,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791665069] [2020-10-29 03:45:53,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:53,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:45:53,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087580779] [2020-10-29 03:45:53,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:45:53,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:53,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:45:53,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:53,586 INFO L87 Difference]: Start difference. First operand 342 states and 351 transitions. Second operand 38 states. [2020-10-29 03:45:54,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:54,772 INFO L93 Difference]: Finished difference Result 652 states and 678 transitions. [2020-10-29 03:45:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:45:54,773 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 337 [2020-10-29 03:45:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:54,775 INFO L225 Difference]: With dead ends: 652 [2020-10-29 03:45:54,775 INFO L226 Difference]: Without dead ends: 351 [2020-10-29 03:45:54,777 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 03:45:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-29 03:45:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2020-10-29 03:45:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-29 03:45:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 360 transitions. [2020-10-29 03:45:54,787 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 360 transitions. Word has length 337 [2020-10-29 03:45:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:54,787 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 360 transitions. [2020-10-29 03:45:54,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:45:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 360 transitions. [2020-10-29 03:45:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-29 03:45:54,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:54,790 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:54,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:45:54,790 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:54,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:54,790 INFO L82 PathProgramCache]: Analyzing trace with hash 911438852, now seen corresponding path program 35 times [2020-10-29 03:45:54,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:54,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518018060] [2020-10-29 03:45:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:54,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:59,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:59,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 03:45:59,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:45:59,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:45:59,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:59,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:45:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:45:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:00,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:00,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:00,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:00,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:00,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 5040 trivial. 0 not checked. [2020-10-29 03:46:01,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518018060] [2020-10-29 03:46:01,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:01,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:46:01,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167978951] [2020-10-29 03:46:01,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:46:01,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:01,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:46:01,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:46:01,068 INFO L87 Difference]: Start difference. First operand 351 states and 360 transitions. Second operand 39 states. [2020-10-29 03:46:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:02,278 INFO L93 Difference]: Finished difference Result 669 states and 695 transitions. [2020-10-29 03:46:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:46:02,279 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 346 [2020-10-29 03:46:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:02,281 INFO L225 Difference]: With dead ends: 669 [2020-10-29 03:46:02,281 INFO L226 Difference]: Without dead ends: 360 [2020-10-29 03:46:02,282 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 03:46:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-29 03:46:02,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2020-10-29 03:46:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-29 03:46:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 369 transitions. [2020-10-29 03:46:02,293 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 369 transitions. Word has length 346 [2020-10-29 03:46:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:02,293 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 369 transitions. [2020-10-29 03:46:02,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:46:02,293 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 369 transitions. [2020-10-29 03:46:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 03:46:02,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:02,296 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:02,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:46:02,296 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:02,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:02,296 INFO L82 PathProgramCache]: Analyzing trace with hash -503178162, now seen corresponding path program 36 times [2020-10-29 03:46:02,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:02,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142483508] [2020-10-29 03:46:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:03,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:03,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:07,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:07,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-29 03:46:07,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5158 [2020-10-29 03:46:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:07,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:46:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-29 03:46:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:46:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:08,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:08,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:08,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:08,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:08,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:08,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:08,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5994 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 5328 trivial. 0 not checked. [2020-10-29 03:46:08,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142483508] [2020-10-29 03:46:08,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:08,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:46:08,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626873868] [2020-10-29 03:46:08,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:46:08,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:08,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:46:08,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:46:08,791 INFO L87 Difference]: Start difference. First operand 360 states and 369 transitions. Second operand 40 states. [2020-10-29 03:46:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:10,008 INFO L93 Difference]: Finished difference Result 686 states and 712 transitions. [2020-10-29 03:46:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:46:10,008 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 355 [2020-10-29 03:46:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:10,010 INFO L225 Difference]: With dead ends: 686 [2020-10-29 03:46:10,010 INFO L226 Difference]: Without dead ends: 369 [2020-10-29 03:46:10,011 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 03:46:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-29 03:46:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2020-10-29 03:46:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-29 03:46:10,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 378 transitions. [2020-10-29 03:46:10,023 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 378 transitions. Word has length 355 [2020-10-29 03:46:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:10,023 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 378 transitions. [2020-10-29 03:46:10,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:46:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 378 transitions. [2020-10-29 03:46:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-29 03:46:10,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:10,026 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:10,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:46:10,026 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:10,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:10,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1724535364, now seen corresponding path program 37 times [2020-10-29 03:46:10,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:10,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336170385] [2020-10-29 03:46:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking...