/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/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:47:53,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:47:53,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:47:53,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:47:53,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:47:53,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:47:53,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:47:53,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:47:53,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:47:53,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:47:53,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:47:53,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:47:53,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:47:53,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:47:53,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:47:53,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:47:53,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:47:53,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:47:53,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:47:53,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:47:53,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:47:53,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:47:53,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:47:53,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:47:53,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:47:53,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:47:53,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:47:53,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:47:53,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:47:53,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:47:53,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:47:53,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:47:53,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:47:53,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:47:53,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:47:53,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:47:53,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:47:53,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:47:53,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:47:53,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:47:53,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:47:53,353 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 14:47:53,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:47:53,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:47:53,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:47:53,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:47:53,414 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:47:53,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:47:53,414 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:47:53,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:47:53,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:47:53,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:47:53,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:47:53,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:47:53,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:47:53,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:47:53,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:47:53,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:47:53,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:47:53,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:47:53,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:47:53,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:47:53,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:47:53,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:47:53,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:47:53,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:47:53,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:47:53,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:47:53,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:47:53,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:47:53,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:47:53,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:47:53,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:47:53,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:47:53,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:47:53,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:47:53,924 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:47:53,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c [2020-10-29 14:47:54,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c5e4cf4e/90e1768ac42c48f6b6d69a8ba3a04ecf/FLAGc40d3470b [2020-10-29 14:47:54,670 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:47:54,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/prefixsum_iter.c [2020-10-29 14:47:54,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c5e4cf4e/90e1768ac42c48f6b6d69a8ba3a04ecf/FLAGc40d3470b [2020-10-29 14:47:54,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c5e4cf4e/90e1768ac42c48f6b6d69a8ba3a04ecf [2020-10-29 14:47:54,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:47:55,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:47:55,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:47:55,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:47:55,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:47:55,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:47:54" (1/1) ... [2020-10-29 14:47:55,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570c5d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55, skipping insertion in model container [2020-10-29 14:47:55,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:47:54" (1/1) ... [2020-10-29 14:47:55,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:47:55,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:47:55,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:47:55,374 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:47:55,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:47:55,459 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:47:55,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55 WrapperNode [2020-10-29 14:47:55,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:47:55,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:47:55,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:47:55,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:47:55,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (1/1) ... [2020-10-29 14:47:55,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (1/1) ... [2020-10-29 14:47:55,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (1/1) ... [2020-10-29 14:47:55,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (1/1) ... [2020-10-29 14:47:55,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (1/1) ... [2020-10-29 14:47:55,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (1/1) ... [2020-10-29 14:47:55,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (1/1) ... [2020-10-29 14:47:55,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:47:55,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:47:55,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:47:55,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:47:55,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (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 14:47:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:47:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:47:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:47:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:47:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 14:47:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2020-10-29 14:47:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2020-10-29 14:47:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2020-10-29 14:47:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 14:47:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:47:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-29 14:47:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 14:47:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 14:47:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:47:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:47:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:47:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:47:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:47:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:47:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 14:47:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2020-10-29 14:47:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:47:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:47:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2020-10-29 14:47:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2020-10-29 14:47:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:47:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:47:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 14:47:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-29 14:47:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:47:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:47:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:47:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:47:56,339 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:47:56,339 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-29 14:47:56,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:47:56 BoogieIcfgContainer [2020-10-29 14:47:56,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:47:56,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:47:56,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:47:56,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:47:56,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:47:54" (1/3) ... [2020-10-29 14:47:56,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486184a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:47:56, skipping insertion in model container [2020-10-29 14:47:56,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:55" (2/3) ... [2020-10-29 14:47:56,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486184a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:47:56, skipping insertion in model container [2020-10-29 14:47:56,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:47:56" (3/3) ... [2020-10-29 14:47:56,350 INFO L111 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2020-10-29 14:47:56,363 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:47:56,368 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:47:56,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:47:56,412 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:47:56,412 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:47:56,412 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:47:56,412 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:47:56,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:47:56,413 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:47:56,413 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:47:56,413 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:47:56,432 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-29 14:47:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 14:47:56,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:47:56,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:47:56,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:47:56,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:47:56,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1994136589, now seen corresponding path program 1 times [2020-10-29 14:47:56,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:47:56,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941739072] [2020-10-29 14:47:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:47:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:56,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 14:48:00,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:48:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3730 [2020-10-29 14:48:00,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 14:48:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 14:48:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 14:48:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:48:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:00,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:00,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:00,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:00,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:00,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:00,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:00,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:00,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 14:48:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:00,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:00,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:00,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:00,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 14:48:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:00,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:00,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 14:48:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:00,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:48:00,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:48:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:48:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:00,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:48:00,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:48:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:48:00,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 14:48:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:00,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:48:00,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:48:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:48:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:00,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 14:48:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:00,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:00,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:48:00,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:48:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:48:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 14:48:00,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941739072] [2020-10-29 14:48:00,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:00,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 14:48:00,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815223992] [2020-10-29 14:48:00,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 14:48:00,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:00,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 14:48:00,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:48:00,945 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 14 states. [2020-10-29 14:48:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:02,241 INFO L93 Difference]: Finished difference Result 165 states and 230 transitions. [2020-10-29 14:48:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 14:48:02,243 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-29 14:48:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:02,255 INFO L225 Difference]: With dead ends: 165 [2020-10-29 14:48:02,255 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 14:48:02,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2020-10-29 14:48:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 14:48:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-10-29 14:48:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 14:48:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-29 14:48:02,330 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 55 [2020-10-29 14:48:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:02,330 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-29 14:48:02,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 14:48:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-29 14:48:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 14:48:02,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:02,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:02,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:48:02,335 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash -496046741, now seen corresponding path program 1 times [2020-10-29 14:48:02,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:02,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589748991] [2020-10-29 14:48:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:02,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:04,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 14:48:07,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:48:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 14:48:07,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 14:48:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:48:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 14:48:07,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:07,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:48:07,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:07,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:07,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:07,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:48:07,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 14:48:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:07,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:07,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 14:48:07,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:48:07,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:48:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 14:48:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:07,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:07,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:48:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:48:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 14:48:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:07,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:07,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:07,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:07,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:48:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:07,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:07,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:07,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:07,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 14:48:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:07,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:07,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:48:07,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:07,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:48:07,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:07,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 14:48:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:07,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:48:07,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 14:48:07,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:07,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:48:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:48:07,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 14:48:07,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589748991] [2020-10-29 14:48:07,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:07,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 14:48:07,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367230087] [2020-10-29 14:48:07,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 14:48:07,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 14:48:07,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:48:07,837 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 14 states. [2020-10-29 14:48:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:09,318 INFO L93 Difference]: Finished difference Result 122 states and 155 transitions. [2020-10-29 14:48:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 14:48:09,322 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-29 14:48:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:09,327 INFO L225 Difference]: With dead ends: 122 [2020-10-29 14:48:09,327 INFO L226 Difference]: Without dead ends: 109 [2020-10-29 14:48:09,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2020-10-29 14:48:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-29 14:48:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-10-29 14:48:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 14:48:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2020-10-29 14:48:09,377 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 59 [2020-10-29 14:48:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:09,378 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2020-10-29 14:48:09,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 14:48:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2020-10-29 14:48:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 14:48:09,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:09,387 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:48:09,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:48:09,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:09,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:09,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1750884257, now seen corresponding path program 1 times [2020-10-29 14:48:09,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:09,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385421068] [2020-10-29 14:48:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:09,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:09,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:48:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:48:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 14:48:14,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 14:48:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:48:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 14:48:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:14,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:14,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:14,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:14,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:14,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:14,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:14,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:48:14,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:14,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:14,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:48:14,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:48:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:14,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:48:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 14:48:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:14,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:14,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:48:14,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:48:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 14:48:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:14,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:14,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:14,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:14,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:14,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:14,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:14,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:48:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:14,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:14,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:14,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:14,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:14,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:14,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 14:48:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 14:48:14,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 14:48:14,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 14:48:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:14,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 14:48:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:14,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:14,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:14,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:14,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:14,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:14,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 14:48:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 14:48:14,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385421068] [2020-10-29 14:48:14,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:14,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 14:48:14,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908833770] [2020-10-29 14:48:14,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 14:48:14,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:14,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 14:48:14,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-29 14:48:14,931 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand 16 states. [2020-10-29 14:48:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:16,644 INFO L93 Difference]: Finished difference Result 176 states and 225 transitions. [2020-10-29 14:48:16,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 14:48:16,646 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-29 14:48:16,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:16,649 INFO L225 Difference]: With dead ends: 176 [2020-10-29 14:48:16,649 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 14:48:16,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 14:48:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 14:48:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 106. [2020-10-29 14:48:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 14:48:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2020-10-29 14:48:16,699 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 60 [2020-10-29 14:48:16,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:16,701 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2020-10-29 14:48:16,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 14:48:16,701 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2020-10-29 14:48:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 14:48:16,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:16,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:16,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:48:16,705 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:16,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1537592328, now seen corresponding path program 1 times [2020-10-29 14:48:16,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:16,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126420962] [2020-10-29 14:48:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:21,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:21,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:48:21,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:48:21,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:48:21,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:21,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:21,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:48:21,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:48:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 14:48:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:21,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:21,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:21,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:21,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:21,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:21,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:21,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:21,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:21,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:21,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:21,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:21,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:21,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:48:21,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:48:21,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:21,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:48:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:48:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:21,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:21,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:21,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:21,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:21,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:21,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:48:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:21,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:21,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:21,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:21,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:48:21,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:21,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:48:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:21,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:21,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:21,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:21,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:48:21,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:21,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:21,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:21,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 14:48:22,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 14:48:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:22,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:22,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:22,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:48:22,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:22,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:48:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:22,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 14:48:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:22,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:22,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:22,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:48:22,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:22,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 14:48:22,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:22,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:48:22,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 14:48:22,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126420962] [2020-10-29 14:48:22,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:22,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 14:48:22,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32381703] [2020-10-29 14:48:22,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:48:22,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:22,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:48:22,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:48:22,140 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand 12 states. [2020-10-29 14:48:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:23,048 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2020-10-29 14:48:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 14:48:23,049 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-29 14:48:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:23,053 INFO L225 Difference]: With dead ends: 145 [2020-10-29 14:48:23,054 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 14:48:23,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:48:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 14:48:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 110. [2020-10-29 14:48:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 14:48:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 139 transitions. [2020-10-29 14:48:23,096 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 139 transitions. Word has length 60 [2020-10-29 14:48:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:23,097 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 139 transitions. [2020-10-29 14:48:23,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:48:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 139 transitions. [2020-10-29 14:48:23,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 14:48:23,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:23,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:23,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:48:23,100 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:23,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:23,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1485283179, now seen corresponding path program 1 times [2020-10-29 14:48:23,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:23,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080607724] [2020-10-29 14:48:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:23,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 14:48:28,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:48:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:48:28,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 14:48:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 14:48:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:28,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:28,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:28,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:28,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:48:28,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:48:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:28,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:28,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:48:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:28,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:28,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:48:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 14:48:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:48:28,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:48:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:48:28,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:48:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 14:48:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:28,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:48:28,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:28,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 14:48:28,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:28,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:48:28,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:48:28,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080607724] [2020-10-29 14:48:28,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:48:28,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:48:28,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694010278] [2020-10-29 14:48:28,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:48:28,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:28,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:48:28,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:48:28,356 INFO L87 Difference]: Start difference. First operand 110 states and 139 transitions. Second operand 8 states. [2020-10-29 14:48:28,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:28,893 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2020-10-29 14:48:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:48:28,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-29 14:48:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:28,897 INFO L225 Difference]: With dead ends: 143 [2020-10-29 14:48:28,898 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 14:48:28,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:48:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 14:48:28,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2020-10-29 14:48:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 14:48:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2020-10-29 14:48:28,921 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 63 [2020-10-29 14:48:28,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:28,921 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2020-10-29 14:48:28,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:48:28,921 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2020-10-29 14:48:28,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 14:48:28,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:28,923 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:48:28,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:48:28,923 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:28,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:28,924 INFO L82 PathProgramCache]: Analyzing trace with hash -538331037, now seen corresponding path program 1 times [2020-10-29 14:48:28,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:28,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106324475] [2020-10-29 14:48:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:29,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:33,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:33,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 14:48:33,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:48:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:48:33,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:33,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 14:48:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:48:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 14:48:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:34,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:34,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:34,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:34,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:48:34,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:34,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:34,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:34,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:48:34,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:48:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:48:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 14:48:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:34,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:34,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:48:34,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 14:48:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:34,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:34,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:48:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:34,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 14:48:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:34,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:48:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:48:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 14:48:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:34,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:48:34,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 14:48:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:34,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:34,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:34,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:34,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:48:34,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106324475] [2020-10-29 14:48:34,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:48:34,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 14:48:34,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259142934] [2020-10-29 14:48:34,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 14:48:34,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:34,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 14:48:34,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:48:34,283 INFO L87 Difference]: Start difference. First operand 111 states and 140 transitions. Second operand 14 states. [2020-10-29 14:48:35,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:35,518 INFO L93 Difference]: Finished difference Result 136 states and 168 transitions. [2020-10-29 14:48:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 14:48:35,520 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 14:48:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:35,522 INFO L225 Difference]: With dead ends: 136 [2020-10-29 14:48:35,522 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 14:48:35,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2020-10-29 14:48:35,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 14:48:35,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2020-10-29 14:48:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 14:48:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2020-10-29 14:48:35,560 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 65 [2020-10-29 14:48:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:35,561 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2020-10-29 14:48:35,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 14:48:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2020-10-29 14:48:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 14:48:35,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:35,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:48:35,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:48:35,563 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash -782036714, now seen corresponding path program 1 times [2020-10-29 14:48:35,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:35,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331843114] [2020-10-29 14:48:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:35,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:35,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:36,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:40,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:48:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:48:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 14:48:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:40,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:40,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:40,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:40,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:40,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:40,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:40,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:40,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:40,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:40,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:40,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:40,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:48:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:40,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:48:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 14:48:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:40,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:40,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:40,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:40,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:40,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 14:48:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:40,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:40,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:40,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:40,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:40,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:40,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:48:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:40,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:40,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:40,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:40,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:40,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 14:48:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:40,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:40,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:40,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 14:48:40,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 14:48:40,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:40,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:48:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:48:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 14:48:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:41,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 14:48:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:41,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:41,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:41,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:41,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:41,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 14:48:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:48:41,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331843114] [2020-10-29 14:48:41,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:41,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 14:48:41,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996115062] [2020-10-29 14:48:41,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:48:41,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:41,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:48:41,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:48:41,074 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand 11 states. [2020-10-29 14:48:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:42,360 INFO L93 Difference]: Finished difference Result 164 states and 204 transitions. [2020-10-29 14:48:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 14:48:42,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-29 14:48:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:42,362 INFO L225 Difference]: With dead ends: 164 [2020-10-29 14:48:42,363 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 14:48:42,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:48:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 14:48:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2020-10-29 14:48:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 14:48:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 159 transitions. [2020-10-29 14:48:42,384 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 159 transitions. Word has length 65 [2020-10-29 14:48:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:42,385 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 159 transitions. [2020-10-29 14:48:42,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 14:48:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 159 transitions. [2020-10-29 14:48:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 14:48:42,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:42,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:48:42,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:48:42,386 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1873178584, now seen corresponding path program 2 times [2020-10-29 14:48:42,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:42,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664724084] [2020-10-29 14:48:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:42,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:42,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:43,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 14:48:47,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:47,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:47,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:47,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:47,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:47,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:47,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:47,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:48:47,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:48:47,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:48:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:48:47,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 14:48:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:47,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:47,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:48:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:48:47,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 14:48:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:47,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:48:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 14:48:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 14:48:47,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:48:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 14:48:47,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:48:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 14:48:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 14:48:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:47,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:47,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:47,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 14:48:47,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:47,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 14:48:47,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664724084] [2020-10-29 14:48:47,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:47,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 14:48:47,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797476055] [2020-10-29 14:48:47,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 14:48:47,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:47,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 14:48:47,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:48:47,772 INFO L87 Difference]: Start difference. First operand 125 states and 159 transitions. Second operand 13 states. [2020-10-29 14:48:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:49,169 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2020-10-29 14:48:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 14:48:49,170 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-29 14:48:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:49,172 INFO L225 Difference]: With dead ends: 150 [2020-10-29 14:48:49,172 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 14:48:49,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-10-29 14:48:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 14:48:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2020-10-29 14:48:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 14:48:49,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2020-10-29 14:48:49,203 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 65 [2020-10-29 14:48:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:49,204 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2020-10-29 14:48:49,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 14:48:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2020-10-29 14:48:49,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 14:48:49,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:49,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:49,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:48:49,211 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:49,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1110764009, now seen corresponding path program 1 times [2020-10-29 14:48:49,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:49,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936643818] [2020-10-29 14:48:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:49,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 14:48:54,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:48:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:48:54,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:48:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:48:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 14:48:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:54,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:54,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:54,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:48:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:54,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:54,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:48:54,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:48:54,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:48:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:48:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:54,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:54,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:48:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:54,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:54,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:48:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:54,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:54,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:54,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:54,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:54,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:54,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:48:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:54,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:54,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:48:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 14:48:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:54,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:54,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:48:54,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:54,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 14:48:54,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:54,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:54,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:54,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:54,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:48:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 14:48:54,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936643818] [2020-10-29 14:48:54,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:54,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 14:48:54,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367989793] [2020-10-29 14:48:54,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:48:54,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:54,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:48:54,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:48:54,531 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand 12 states. [2020-10-29 14:48:55,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:55,419 INFO L93 Difference]: Finished difference Result 122 states and 149 transitions. [2020-10-29 14:48:55,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 14:48:55,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-29 14:48:55,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:55,421 INFO L225 Difference]: With dead ends: 122 [2020-10-29 14:48:55,421 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 14:48:55,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-29 14:48:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 14:48:55,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2020-10-29 14:48:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 14:48:55,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2020-10-29 14:48:55,434 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 65 [2020-10-29 14:48:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:55,435 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2020-10-29 14:48:55,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:48:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2020-10-29 14:48:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 14:48:55,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:55,436 INFO L422 BasicCegarLoop]: trace histogram [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, 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 14:48:55,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:48:55,436 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:55,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1975094503, now seen corresponding path program 2 times [2020-10-29 14:48:55,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:55,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752340413] [2020-10-29 14:48:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:00,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:00,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 14:49:00,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:49:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:49:00,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:00,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 14:49:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:49:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 14:49:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:49:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:00,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:00,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:00,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:00,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:49:00,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:00,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:49:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:00,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:00,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:00,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:00,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:49:00,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:49:00,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:00,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:49:00,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:49:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:00,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:00,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:49:00,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 14:49:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:00,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:49:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:49:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:49:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:00,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:00,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:00,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:00,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:49:00,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:00,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:49:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:49:00,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:49:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:01,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:49:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:01,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:49:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:01,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:01,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:01,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:01,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:01,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:01,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 14:49:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:01,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:01,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:01,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:49:01,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:49:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:49:01,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:01,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:49:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:49:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 14:49:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:01,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:01,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:49:01,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:01,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 14:49:01,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:01,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:49:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 14:49:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 14:49:01,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752340413] [2020-10-29 14:49:01,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:49:01,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 14:49:01,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896331075] [2020-10-29 14:49:01,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 14:49:01,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:49:01,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 14:49:01,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-29 14:49:01,353 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand 21 states. [2020-10-29 14:49:02,988 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-29 14:49:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:49:04,086 INFO L93 Difference]: Finished difference Result 139 states and 176 transitions. [2020-10-29 14:49:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 14:49:04,087 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 67 [2020-10-29 14:49:04,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:49:04,089 INFO L225 Difference]: With dead ends: 139 [2020-10-29 14:49:04,090 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 14:49:04,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=183, Invalid=1539, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 14:49:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 14:49:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2020-10-29 14:49:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-29 14:49:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 153 transitions. [2020-10-29 14:49:04,109 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 153 transitions. Word has length 67 [2020-10-29 14:49:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:49:04,109 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 153 transitions. [2020-10-29 14:49:04,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 14:49:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 153 transitions. [2020-10-29 14:49:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 14:49:04,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:49:04,111 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:49:04,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:49:04,111 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:49:04,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:49:04,111 INFO L82 PathProgramCache]: Analyzing trace with hash -988458285, now seen corresponding path program 3 times [2020-10-29 14:49:04,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:49:04,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543267089] [2020-10-29 14:49:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:49:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:04,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:04,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:06,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 14:49:09,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:49:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:49:09,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 14:49:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:49:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 14:49:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:49:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:09,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:09,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:49:09,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:49:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:09,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:49:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:49:09,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:49:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:49:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:49:09,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:09,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 14:49:09,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:49:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:09,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:49:09,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:49:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:09,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:09,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:09,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:49:09,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:49:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:49:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:49:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:09,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:09,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:09,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:49:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:09,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 14:49:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:49:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:49:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 14:49:09,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:49:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 14:49:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:09,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:09,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:09,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 14:49:09,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 14:49:09,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:09,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:49:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:49:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 14:49:09,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 14:49:09,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543267089] [2020-10-29 14:49:09,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:49:09,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 14:49:09,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885689376] [2020-10-29 14:49:09,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 14:49:09,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:49:09,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 14:49:09,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-29 14:49:09,609 INFO L87 Difference]: Start difference. First operand 118 states and 153 transitions. Second operand 16 states. [2020-10-29 14:49:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:49:15,749 INFO L93 Difference]: Finished difference Result 157 states and 214 transitions. [2020-10-29 14:49:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 14:49:15,750 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-29 14:49:15,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:49:15,755 INFO L225 Difference]: With dead ends: 157 [2020-10-29 14:49:15,755 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 14:49:15,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 14:49:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 14:49:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 125. [2020-10-29 14:49:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 14:49:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 165 transitions. [2020-10-29 14:49:15,777 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 165 transitions. Word has length 68 [2020-10-29 14:49:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:49:15,778 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 165 transitions. [2020-10-29 14:49:15,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 14:49:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 165 transitions. [2020-10-29 14:49:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 14:49:15,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:49:15,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:15,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:49:15,780 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:49:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:49:15,780 INFO L82 PathProgramCache]: Analyzing trace with hash -442627791, now seen corresponding path program 1 times [2020-10-29 14:49:15,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:49:15,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620946833] [2020-10-29 14:49:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:49:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:15,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:16,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:20,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 14:49:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:49:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:49:20,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:20,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 14:49:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:49:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 14:49:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:49:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:20,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:20,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:20,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:49:20,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:20,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:20,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:49:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:20,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:20,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:20,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:49:20,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:20,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:49:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:20,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:20,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:49:20,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:20,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 14:49:20,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:20,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:49:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:20,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:49:20,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:49:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:49:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:21,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:21,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:49:21,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:21,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:21,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:21,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:21,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:49:21,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 14:49:21,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:49:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:21,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:21,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:21,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:21,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:49:21,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:21,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:49:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:21,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:21,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:49:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:21,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 14:49:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:21,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:21,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 14:49:21,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:49:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-29 14:49:21,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:21,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:49:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:49:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 14:49:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:21,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 14:49:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:21,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:21,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:21,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:21,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:49:21,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:21,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 14:49:21,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:21,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 14:49:21,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620946833] [2020-10-29 14:49:21,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:49:21,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 14:49:21,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903632835] [2020-10-29 14:49:21,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 14:49:21,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:49:21,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 14:49:21,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:49:21,748 INFO L87 Difference]: Start difference. First operand 125 states and 165 transitions. Second operand 13 states. [2020-10-29 14:49:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:49:23,787 INFO L93 Difference]: Finished difference Result 226 states and 304 transitions. [2020-10-29 14:49:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 14:49:23,787 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-29 14:49:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:49:23,789 INFO L225 Difference]: With dead ends: 226 [2020-10-29 14:49:23,789 INFO L226 Difference]: Without dead ends: 178 [2020-10-29 14:49:23,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2020-10-29 14:49:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-29 14:49:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 151. [2020-10-29 14:49:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 14:49:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2020-10-29 14:49:23,817 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 68 [2020-10-29 14:49:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:49:23,817 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2020-10-29 14:49:23,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 14:49:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2020-10-29 14:49:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 14:49:23,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:49:23,819 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:49:23,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:49:23,819 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:49:23,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:49:23,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1279826762, now seen corresponding path program 4 times [2020-10-29 14:49:23,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:49:23,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911476809] [2020-10-29 14:49:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:49:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:26,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:28,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:28,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 14:49:28,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:49:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:49:28,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:28,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 14:49:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:49:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 14:49:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:49:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:28,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:28,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:28,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:28,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:28,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:49:28,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:28,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:28,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:49:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:28,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:49:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:28,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:28,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:49:28,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:28,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:49:28,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:28,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:49:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:28,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:49:28,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 14:49:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:29,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:29,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:29,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:29,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:29,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:29,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:49:29,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:49:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:29,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:29,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:29,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:29,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 14:49:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:29,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:29,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:29,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:49:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:29,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:49:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:29,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:29,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:49:29,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:49:29,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:49:29,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:29,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:29,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:49:29,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:49:29,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:49:29,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 14:49:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:29,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:29,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:49:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:49:29,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:29,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 14:49:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:49:29,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911476809] [2020-10-29 14:49:29,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:49:29,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 14:49:29,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62348586] [2020-10-29 14:49:29,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 14:49:29,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:49:29,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 14:49:29,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:49:29,189 INFO L87 Difference]: Start difference. First operand 151 states and 204 transitions. Second operand 13 states. [2020-10-29 14:49:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:49:30,526 INFO L93 Difference]: Finished difference Result 213 states and 280 transitions. [2020-10-29 14:49:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 14:49:30,526 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-29 14:49:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:49:30,529 INFO L225 Difference]: With dead ends: 213 [2020-10-29 14:49:30,529 INFO L226 Difference]: Without dead ends: 167 [2020-10-29 14:49:30,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2020-10-29 14:49:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-29 14:49:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 154. [2020-10-29 14:49:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 14:49:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2020-10-29 14:49:30,564 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 68 [2020-10-29 14:49:30,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:49:30,564 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2020-10-29 14:49:30,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 14:49:30,564 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2020-10-29 14:49:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 14:49:30,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:49:30,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:30,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:49:30,566 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:49:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:49:30,567 INFO L82 PathProgramCache]: Analyzing trace with hash -364164300, now seen corresponding path program 2 times [2020-10-29 14:49:30,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:49:30,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362401868] [2020-10-29 14:49:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:49:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:30,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:30,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:30,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:31,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:33,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:35,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 14:49:35,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:49:35,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:49:35,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:35,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:49:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:49:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 14:49:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:35,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:49:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:35,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:35,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:35,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:35,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:49:35,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:35,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:35,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:49:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:35,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:35,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:35,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:35,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:35,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:35,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:35,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:35,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:35,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:49:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:35,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:49:35,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 14:49:35,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:35,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:49:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:49:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 14:49:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:35,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:35,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:35,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:35,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:49:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:49:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:35,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:35,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:49:35,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:35,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 14:49:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:35,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:35,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:35,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:35,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:35,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:49:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:35,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:35,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 14:49:35,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:49:35,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 14:49:35,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:35,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:49:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:49:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 14:49:35,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:36,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 14:49:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:36,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:36,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:36,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:49:36,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:36,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 14:49:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:36,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 14:49:36,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362401868] [2020-10-29 14:49:36,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:49:36,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 14:49:36,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830547336] [2020-10-29 14:49:36,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:49:36,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:49:36,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:49:36,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:49:36,037 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand 12 states. [2020-10-29 14:49:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:49:37,751 INFO L93 Difference]: Finished difference Result 253 states and 342 transitions. [2020-10-29 14:49:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 14:49:37,754 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-29 14:49:37,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:49:37,755 INFO L225 Difference]: With dead ends: 253 [2020-10-29 14:49:37,755 INFO L226 Difference]: Without dead ends: 161 [2020-10-29 14:49:37,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-10-29 14:49:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-29 14:49:37,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 146. [2020-10-29 14:49:37,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 14:49:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2020-10-29 14:49:37,784 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 69 [2020-10-29 14:49:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:49:37,784 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2020-10-29 14:49:37,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:49:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2020-10-29 14:49:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 14:49:37,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:49:37,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:37,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:49:37,786 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:49:37,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:49:37,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2003916298, now seen corresponding path program 3 times [2020-10-29 14:49:37,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:49:37,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969305026] [2020-10-29 14:49:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:49:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:38,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:41,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:42,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:42,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 14:49:42,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:49:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:49:42,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:42,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 14:49:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:49:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 14:49:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:49:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:42,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:42,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:42,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:42,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:49:42,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:42,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:42,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:42,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:49:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:42,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:42,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:42,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:49:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:42,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:49:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:49:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:49:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:42,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:49:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:42,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 14:49:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:42,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:42,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:42,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:42,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:42,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:42,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:49:42,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:49:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:42,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 14:49:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:42,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:42,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:42,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:42,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:49:42,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:42,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:43,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:43,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:43,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:43,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:49:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:43,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 14:49:43,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:49:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-29 14:49:43,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:43,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:43,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:49:43,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:43,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 14:49:43,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:43,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 14:49:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:43,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:43,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:43,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:43,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:43,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:49:43,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:43,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:43,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:49:43,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:49:43,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:49:43,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 14:49:43,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969305026] [2020-10-29 14:49:43,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:49:43,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 14:49:43,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568206567] [2020-10-29 14:49:43,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 14:49:43,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:49:43,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 14:49:43,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-29 14:49:43,689 INFO L87 Difference]: Start difference. First operand 146 states and 189 transitions. Second operand 18 states. [2020-10-29 14:49:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:49:45,206 INFO L93 Difference]: Finished difference Result 176 states and 225 transitions. [2020-10-29 14:49:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 14:49:45,207 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-10-29 14:49:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:49:45,208 INFO L225 Difference]: With dead ends: 176 [2020-10-29 14:49:45,208 INFO L226 Difference]: Without dead ends: 153 [2020-10-29 14:49:45,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 14:49:45,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-29 14:49:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2020-10-29 14:49:45,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 14:49:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2020-10-29 14:49:45,231 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 69 [2020-10-29 14:49:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:49:45,231 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2020-10-29 14:49:45,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 14:49:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2020-10-29 14:49:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 14:49:45,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:49:45,233 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:45,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:49:45,233 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:49:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:49:45,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1780578788, now seen corresponding path program 1 times [2020-10-29 14:49:45,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:49:45,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783197212] [2020-10-29 14:49:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:49:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:45,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:46,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 14:49:50,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:49:50,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:49:50,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 14:49:50,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:49:50,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 14:49:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:49:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:50,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:50,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:50,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:49:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:49:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:49:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:50,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:49:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:49:50,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:49:50,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:49:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:49:50,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:50,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 14:49:50,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:49:50,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:49:50,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:49:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:49:50,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:49:50,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:49:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:49:50,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:49:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:50,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:50,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:49:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:49:50,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:49:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:49:50,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:49:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 14:49:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 14:49:50,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:49:50,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 14:49:50,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:49:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:49:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 14:49:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 14:49:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:50,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:50,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:49:50,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 14:49:50,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:49:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 14:49:50,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:49:50,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:49:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:49:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:49:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 14:49:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:49:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:49:50,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783197212] [2020-10-29 14:49:50,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:49:50,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 14:49:50,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260042709] [2020-10-29 14:49:50,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 14:49:50,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:49:50,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 14:49:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-29 14:49:50,825 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand 17 states. [2020-10-29 14:49:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:49:56,823 INFO L93 Difference]: Finished difference Result 178 states and 226 transitions. [2020-10-29 14:49:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 14:49:56,823 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2020-10-29 14:49:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:49:56,825 INFO L225 Difference]: With dead ends: 178 [2020-10-29 14:49:56,825 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 14:49:56,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 14:49:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 14:49:56,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2020-10-29 14:49:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-29 14:49:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 177 transitions. [2020-10-29 14:49:56,847 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 177 transitions. Word has length 72 [2020-10-29 14:49:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:49:56,847 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 177 transitions. [2020-10-29 14:49:56,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 14:49:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 177 transitions. [2020-10-29 14:49:56,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 14:49:56,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:49:56,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:56,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:49:56,849 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:49:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:49:56,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1876859461, now seen corresponding path program 1 times [2020-10-29 14:49:56,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:49:56,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403811611] [2020-10-29 14:49:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:49:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:49:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:57,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:49:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:01,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 14:50:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:50:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:01,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:01,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:01,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:50:01,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:01,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:50:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:50:01,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:50:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:01,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:01,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:50:01,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:50:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:01,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:50:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:50:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:01,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:50:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:02,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:50:02,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:02,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:50:02,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:02,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:50:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:50:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 14:50:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:02,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:50:02,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:50:02,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:02,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:50:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:50:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:02,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:02,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:50:02,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:02,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:50:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:02,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 14:50:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:02,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:02,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:50:02,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:02,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:50:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:02,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:50:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 14:50:02,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:50:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-29 14:50:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:02,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:50:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 14:50:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 14:50:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:02,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:50:02,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:02,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:50:02,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:02,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:50:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:50:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:50:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 14:50:02,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403811611] [2020-10-29 14:50:02,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:50:02,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 14:50:02,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982734081] [2020-10-29 14:50:02,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 14:50:02,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:50:02,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 14:50:02,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-29 14:50:02,725 INFO L87 Difference]: Start difference. First operand 140 states and 177 transitions. Second operand 19 states. [2020-10-29 14:50:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:50:04,456 INFO L93 Difference]: Finished difference Result 187 states and 240 transitions. [2020-10-29 14:50:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 14:50:04,457 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2020-10-29 14:50:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:50:04,459 INFO L225 Difference]: With dead ends: 187 [2020-10-29 14:50:04,459 INFO L226 Difference]: Without dead ends: 164 [2020-10-29 14:50:04,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=1113, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 14:50:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-29 14:50:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2020-10-29 14:50:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 14:50:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 200 transitions. [2020-10-29 14:50:04,483 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 200 transitions. Word has length 72 [2020-10-29 14:50:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:50:04,484 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 200 transitions. [2020-10-29 14:50:04,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 14:50:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 200 transitions. [2020-10-29 14:50:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 14:50:04,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:50:04,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:04,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 14:50:04,486 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:50:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:50:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash 459174884, now seen corresponding path program 1 times [2020-10-29 14:50:04,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:50:04,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10933970] [2020-10-29 14:50:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:50:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:04,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:06,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 14:50:09,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:50:09,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:50:09,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 14:50:09,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:50:09,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 14:50:09,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:50:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:09,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:50:09,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:50:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:50:09,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:50:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:50:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:50:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:50:09,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:50:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:50:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:50:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:09,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:50:09,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:50:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:50:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:09,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:50:09,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:50:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 14:50:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 14:50:09,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:50:09,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:50:09,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 14:50:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 14:50:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:50:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 14:50:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:09,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:09,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:50:09,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:09,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:50:09,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:09,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:50:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 14:50:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:50:09,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 14:50:09,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10933970] [2020-10-29 14:50:09,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:50:09,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 14:50:09,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118969649] [2020-10-29 14:50:09,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 14:50:09,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:50:09,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 14:50:09,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:50:09,825 INFO L87 Difference]: Start difference. First operand 156 states and 200 transitions. Second operand 14 states. [2020-10-29 14:50:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:50:11,042 INFO L93 Difference]: Finished difference Result 188 states and 236 transitions. [2020-10-29 14:50:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 14:50:11,047 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-10-29 14:50:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:50:11,049 INFO L225 Difference]: With dead ends: 188 [2020-10-29 14:50:11,049 INFO L226 Difference]: Without dead ends: 161 [2020-10-29 14:50:11,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-10-29 14:50:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-29 14:50:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 142. [2020-10-29 14:50:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-29 14:50:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 178 transitions. [2020-10-29 14:50:11,074 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 178 transitions. Word has length 75 [2020-10-29 14:50:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:50:11,074 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 178 transitions. [2020-10-29 14:50:11,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 14:50:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 178 transitions. [2020-10-29 14:50:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 14:50:11,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:50:11,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:11,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 14:50:11,076 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:50:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:50:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1747571294, now seen corresponding path program 1 times [2020-10-29 14:50:11,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:50:11,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833598614] [2020-10-29 14:50:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:50:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:12,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:16,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 14:50:16,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:50:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 14:50:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:16,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 14:50:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:50:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 14:50:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:16,859 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-10-29 14:50:17,529 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 37 [2020-10-29 14:50:18,057 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 34 [2020-10-29 14:50:18,644 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 32 [2020-10-29 14:50:19,201 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 25 [2020-10-29 14:50:20,106 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 46 [2020-10-29 14:50:20,936 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 52 [2020-10-29 14:50:23,442 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 165 DAG size of output: 67 [2020-10-29 14:50:24,458 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 57 [2020-10-29 14:50:25,640 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 65 [2020-10-29 14:50:27,410 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-10-29 14:50:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:50:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:27,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:27,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:27,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:50:27,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:27,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:50:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:50:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:50:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:27,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:27,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:50:27,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:50:27,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:27,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:27,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:50:27,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:27,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:50:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:50:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:27,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:27,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:27,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:50:27,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:50:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:27,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:50:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:50:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:28,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:50:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:28,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:50:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:28,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:50:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:50:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:28,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:28,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:28,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:28,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:50:28,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:28,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:50:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:50:28,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:28,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:50:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:28,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:28,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:50:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:50:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:28,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:50:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:50:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:50:28,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 14:50:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:28,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:28,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:28,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 14:50:28,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 14:50:28,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:28,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 14:50:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:50:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 14:50:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 14:50:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:29,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:29,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 14:50:29,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-29 14:50:29,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:29,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:50:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:50:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:50:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:31,157 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-10-29 14:50:35,305 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 508 DAG size of output: 55 [2020-10-29 14:50:40,017 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 515 DAG size of output: 53 [2020-10-29 14:50:46,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 14:50:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:50:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:50:46,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:50:46,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:50:46,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:50:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:50:46,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:50:46,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:50:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:50:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:50:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:50:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:50:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:50:46,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833598614] [2020-10-29 14:50:46,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:50:46,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 14:50:46,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573419934] [2020-10-29 14:50:46,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 14:50:46,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:50:46,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 14:50:46,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=976, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 14:50:46,766 INFO L87 Difference]: Start difference. First operand 142 states and 178 transitions. Second operand 33 states. [2020-10-29 14:50:49,811 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-29 14:50:51,865 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-29 14:50:52,449 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2020-10-29 14:50:52,802 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2020-10-29 14:50:53,584 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-10-29 14:50:54,530 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 14:50:55,140 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 14:50:56,052 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 47 [2020-10-29 14:50:56,867 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 14:51:01,168 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 14:51:06,102 WARN L193 SmtUtils]: Spent 3.18 s on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 14:51:14,767 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 14:51:19,639 WARN L193 SmtUtils]: Spent 3.55 s on a formula simplification that was a NOOP. DAG size: 140 [2020-10-29 14:51:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:51:22,024 INFO L93 Difference]: Finished difference Result 171 states and 210 transitions. [2020-10-29 14:51:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 14:51:22,027 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2020-10-29 14:51:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:51:22,029 INFO L225 Difference]: With dead ends: 171 [2020-10-29 14:51:22,029 INFO L226 Difference]: Without dead ends: 168 [2020-10-29 14:51:22,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 51.9s TimeCoverageRelationStatistics Valid=348, Invalid=4074, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 14:51:22,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-29 14:51:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2020-10-29 14:51:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-29 14:51:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 188 transitions. [2020-10-29 14:51:22,062 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 188 transitions. Word has length 76 [2020-10-29 14:51:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:51:22,063 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 188 transitions. [2020-10-29 14:51:22,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 14:51:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 188 transitions. [2020-10-29 14:51:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 14:51:22,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:51:22,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:51:22,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 14:51:22,065 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:51:22,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:51:22,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1957904886, now seen corresponding path program 2 times [2020-10-29 14:51:22,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:51:22,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538320252] [2020-10-29 14:51:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:51:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:25,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 14:51:27,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:51:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:51:27,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 14:51:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:51:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 14:51:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:51:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:51:27,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:51:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:51:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:51:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:51:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:51:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:27,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:51:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:51:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:51:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:51:27,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:51:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:51:27,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:51:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:51:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:51:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 14:51:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:51:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:27,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 14:51:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:51:27,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:51:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:51:27,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:51:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:51:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:51:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:27,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 14:51:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:51:27,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:51:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:51:27,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:51:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:51:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:51:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:27,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:51:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 14:51:27,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:51:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 14:51:27,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:51:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:51:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 14:51:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 14:51:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:27,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:51:27,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:51:27,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:51:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 14:51:27,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:51:27,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:51:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:51:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:51:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:51:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:51:28,117 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 17 [2020-10-29 14:51:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 14:51:28,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538320252] [2020-10-29 14:51:28,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:51:28,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 14:51:28,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078063174] [2020-10-29 14:51:28,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 14:51:28,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:51:28,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 14:51:28,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-29 14:51:28,261 INFO L87 Difference]: Start difference. First operand 152 states and 188 transitions. Second operand 17 states. [2020-10-29 14:51:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:51:31,333 INFO L93 Difference]: Finished difference Result 195 states and 245 transitions. [2020-10-29 14:51:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 14:51:31,335 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-29 14:51:31,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:51:31,337 INFO L225 Difference]: With dead ends: 195 [2020-10-29 14:51:31,337 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 14:51:31,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 14:51:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 14:51:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 162. [2020-10-29 14:51:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-29 14:51:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 202 transitions. [2020-10-29 14:51:31,393 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 202 transitions. Word has length 76 [2020-10-29 14:51:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:51:31,394 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 202 transitions. [2020-10-29 14:51:31,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 14:51:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 202 transitions. [2020-10-29 14:51:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 14:51:31,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:51:31,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:51:31,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 14:51:31,406 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:51:31,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:51:31,406 INFO L82 PathProgramCache]: Analyzing trace with hash 421296088, now seen corresponding path program 3 times [2020-10-29 14:51:31,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:51:31,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756974639] [2020-10-29 14:51:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:51:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:51:31,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:31,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:51:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking...