/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/mapsum1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:19:13,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:19:13,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:19:13,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:19:13,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:19:13,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:19:13,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:19:13,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:19:13,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:19:13,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:19:13,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:19:13,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:19:13,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:19:13,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:19:13,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:19:13,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:19:13,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:19:13,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:19:13,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:19:13,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:19:13,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:19:13,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:19:13,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:19:13,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:19:13,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:19:13,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:19:13,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:19:13,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:19:13,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:19:13,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:19:13,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:19:13,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:19:13,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:19:13,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:19:13,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:19:13,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:19:13,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:19:13,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:19:13,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:19:13,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:19:13,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:19:13,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:19:13,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:19:13,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:19:13,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:19:13,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:19:13,689 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:19:13,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:19:13,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:19:13,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:19:13,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:19:13,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:19:13,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:19:13,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:19:13,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:19:13,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:19:13,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:19:13,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:19:13,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:19:13,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:19:13,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:19:13,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:19:13,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:19:13,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:19:13,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:19:13,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:19:13,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:19:13,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:19:13,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:19:13,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:19:13,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:19:13,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:19:14,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:19:14,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:19:14,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:19:14,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:19:14,302 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:19:14,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum1.i [2020-10-29 03:19:14,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84793eeb/d90d8600b5af4fd9a1682c16d4ed5f76/FLAGbac819487 [2020-10-29 03:19:15,018 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:19:15,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum1.i [2020-10-29 03:19:15,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84793eeb/d90d8600b5af4fd9a1682c16d4ed5f76/FLAGbac819487 [2020-10-29 03:19:15,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84793eeb/d90d8600b5af4fd9a1682c16d4ed5f76 [2020-10-29 03:19:15,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:19:15,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:19:15,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:15,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:19:15,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:19:15,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:15,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2394ee2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15, skipping insertion in model container [2020-10-29 03:19:15,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:15,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:19:15,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:19:15,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:15,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:19:15,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:15,900 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:19:15,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15 WrapperNode [2020-10-29 03:19:15,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:15,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:19:15,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:19:15,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:19:15,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:15,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:15,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:15,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:16,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:16,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:16,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (1/1) ... [2020-10-29 03:19:16,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:19:16,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:19:16,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:19:16,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:19:16,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:19:16,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:19:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:19:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:19:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-29 03:19:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:19:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:19:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:19:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:19:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:19:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:19:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:19:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:19:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-29 03:19:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:19:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:19:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:19:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:19:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:19:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:19:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:19:16,453 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:19:16,454 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:19:16,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:16 BoogieIcfgContainer [2020-10-29 03:19:16,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:19:16,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:19:16,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:19:16,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:19:16,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:19:15" (1/3) ... [2020-10-29 03:19:16,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770e4f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:16, skipping insertion in model container [2020-10-29 03:19:16,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:15" (2/3) ... [2020-10-29 03:19:16,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770e4f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:16, skipping insertion in model container [2020-10-29 03:19:16,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:16" (3/3) ... [2020-10-29 03:19:16,468 INFO L111 eAbstractionObserver]: Analyzing ICFG mapsum1.i [2020-10-29 03:19:16,484 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:19:16,490 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:19:16,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:19:16,554 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:19:16,554 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:19:16,554 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:19:16,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:19:16,555 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:19:16,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:19:16,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:19:16,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:19:16,598 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 03:19:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:19:16,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:16,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:16,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:16,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:16,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-29 03:19:16,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:16,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766683307] [2020-10-29 03:19:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:17,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:17,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:19:18,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:19:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-29 03:19:18,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:18,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:19:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:19:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 03:19:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:18,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:18,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:18,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:18,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:18,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:18,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:18,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:18,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:18,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 03:19:18,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:18,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:19:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:19,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:19,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:19,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:19,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 03:19:19,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:19,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:19,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:19:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:19,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:19,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:19,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:19,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 03:19:19,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:19,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:19,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:19,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:19,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:19,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766683307] [2020-10-29 03:19:19,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:19:19,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 03:19:19,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029824818] [2020-10-29 03:19:19,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:19:19,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:19,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:19:19,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:19,209 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 11 states. [2020-10-29 03:19:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:19,771 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2020-10-29 03:19:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:19:19,773 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 03:19:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:19,785 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:19:19,785 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:19:19,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:19:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:19:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 03:19:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:19:19,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-29 03:19:19,847 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 34 [2020-10-29 03:19:19,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:19,848 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-29 03:19:19,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:19:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-29 03:19:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:19:19,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:19,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:19,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:19:19,852 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:19,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:19,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1502494865, now seen corresponding path program 1 times [2020-10-29 03:19:19,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:19,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612181830] [2020-10-29 03:19:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:21,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:19:21,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1656 [2020-10-29 03:19:21,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:21,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:21,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:21,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:21,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:21,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:21,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:21,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:21,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:19:21,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:21,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:21,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:19:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:21,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:21,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:21,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:19:21,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:21,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:21,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:19:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:21,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:21,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:21,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:21,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:21,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:21,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612181830] [2020-10-29 03:19:21,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:21,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:19:21,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534200245] [2020-10-29 03:19:21,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:19:21,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:21,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:19:21,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:19:21,640 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2020-10-29 03:19:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:21,783 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-29 03:19:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:19:21,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-29 03:19:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:21,785 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:19:21,785 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:19:21,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:19:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 03:19:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:19:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 03:19:21,794 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-29 03:19:21,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:21,794 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 03:19:21,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:19:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 03:19:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:19:21,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:21,797 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:21,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:19:21,797 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:21,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-29 03:19:21,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:21,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688294484] [2020-10-29 03:19:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:21,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:19:26,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:26,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:19:26,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 03:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:26,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:26,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:26,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:26,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:26,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 03:19:26,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:26,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:26,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:26,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:26,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:19:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:27,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:27,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:27,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 03:19:27,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:27,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:19:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:19:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 03:19:27,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:27,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 03:19:27,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688294484] [2020-10-29 03:19:27,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:27,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:19:27,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099443820] [2020-10-29 03:19:27,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:19:27,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:27,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:19:27,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:19:27,091 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-29 03:19:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:27,315 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 03:19:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:19:27,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 03:19:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:27,317 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:19:27,317 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:19:27,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:19:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 03:19:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:19:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 03:19:27,327 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-29 03:19:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:27,328 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 03:19:27,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:19:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 03:19:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:19:27,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:27,332 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:27,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:19:27,334 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:27,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1945310827, now seen corresponding path program 3 times [2020-10-29 03:19:27,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:27,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590686558] [2020-10-29 03:19:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:19:32,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:32,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:19:32,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:32,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 03:19:32,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:32,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:19:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:32,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:19:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:32,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 03:19:32,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:19:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:32,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 03:19:32,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:32,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:32,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:19:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:32,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 03:19:32,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:32,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 03:19:32,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590686558] [2020-10-29 03:19:32,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:32,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:19:32,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16310941] [2020-10-29 03:19:32,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:19:32,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:19:32,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:32,602 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-29 03:19:32,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:32,851 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 03:19:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:19:32,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-29 03:19:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:32,853 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:19:32,853 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:19:32,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:19:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 03:19:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:19:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 03:19:32,872 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-29 03:19:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:32,875 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 03:19:32,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:19:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 03:19:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:19:32,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:32,878 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:32,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:19:32,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:32,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2080502327, now seen corresponding path program 4 times [2020-10-29 03:19:32,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:32,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019708611] [2020-10-29 03:19:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:34,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:19:37,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:19:37,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:37,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:37,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:37,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:37,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:37,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:37,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:37,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:38,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:38,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 03:19:38,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:19:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:38,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:38,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 03:19:38,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:19:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:38,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:38,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 03:19:38,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:19:38,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019708611] [2020-10-29 03:19:38,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:38,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:19:38,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404558511] [2020-10-29 03:19:38,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:19:38,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:38,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:19:38,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:19:38,192 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-29 03:19:38,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:38,418 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 03:19:38,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:19:38,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 03:19:38,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:38,419 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:19:38,420 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:19:38,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:19:38,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:19:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 03:19:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:19:38,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-29 03:19:38,427 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-29 03:19:38,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:38,428 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-29 03:19:38,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:19:38,428 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-29 03:19:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:19:38,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:38,429 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:38,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:19:38,430 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:38,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1013073575, now seen corresponding path program 5 times [2020-10-29 03:19:38,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:38,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075738153] [2020-10-29 03:19:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:40,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:19:43,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:19:43,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:19:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:43,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:43,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:43,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:43,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 03:19:43,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:43,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:19:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 03:19:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:19:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:43,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 03:19:43,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:43,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:19:43,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075738153] [2020-10-29 03:19:43,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:43,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:19:43,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483025319] [2020-10-29 03:19:43,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:19:43,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:43,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:19:43,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:43,749 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-29 03:19:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:44,042 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 03:19:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:19:44,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 03:19:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:44,044 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:19:44,044 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:19:44,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:19:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:19:44,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 03:19:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:19:44,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 03:19:44,057 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-29 03:19:44,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:44,057 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 03:19:44,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:19:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 03:19:44,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:19:44,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:44,059 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:44,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:19:44,061 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:44,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:44,062 INFO L82 PathProgramCache]: Analyzing trace with hash 247996677, now seen corresponding path program 6 times [2020-10-29 03:19:44,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:44,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647395647] [2020-10-29 03:19:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:44,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:19:49,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:19:49,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:19:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:49,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:49,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:49,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:49,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 03:19:49,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:49,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:19:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:49,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:49,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 03:19:49,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:49,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:19:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:49,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:49,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 03:19:49,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 03:19:49,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647395647] [2020-10-29 03:19:49,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:49,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:19:49,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321291787] [2020-10-29 03:19:49,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:19:49,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:49,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:19:49,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:19:49,410 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-29 03:19:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:49,697 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 03:19:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:19:49,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-29 03:19:49,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:49,698 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:19:49,699 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:19:49,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:19:49,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:19:49,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 03:19:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:19:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 03:19:49,709 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-29 03:19:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:49,710 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 03:19:49,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:19:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 03:19:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:19:49,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:49,714 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:49,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:19:49,715 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:49,715 INFO L82 PathProgramCache]: Analyzing trace with hash 258997475, now seen corresponding path program 7 times [2020-10-29 03:19:49,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:49,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866510147] [2020-10-29 03:19:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:19:54,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:19:54,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 03:19:54,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:19:54,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:54,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:54,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 03:19:54,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:54,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:19:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:55,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:55,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:55,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 03:19:55,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:55,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:55,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:55,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:55,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:55,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:55,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:19:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:55,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:19:55,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 03:19:55,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:55,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:19:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:19:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 03:19:55,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866510147] [2020-10-29 03:19:55,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:55,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:19:55,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008985978] [2020-10-29 03:19:55,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:19:55,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:19:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:55,145 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-29 03:19:55,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:55,463 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 03:19:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:19:55,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 03:19:55,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:55,465 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:19:55,465 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:19:55,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:19:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:19:55,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 03:19:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:19:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 03:19:55,473 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-29 03:19:55,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:55,473 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 03:19:55,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:19:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 03:19:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:19:55,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:55,475 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:55,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:19:55,475 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:55,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:55,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1798453825, now seen corresponding path program 8 times [2020-10-29 03:19:55,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:55,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486395398] [2020-10-29 03:19:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:20:00,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:20:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:20:00,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:00,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:00,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:00,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 03:20:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:20:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:20:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:00,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 03:20:00,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:20:00,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486395398] [2020-10-29 03:20:00,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:00,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:20:00,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619435720] [2020-10-29 03:20:00,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:20:00,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:00,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:20:00,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:20:00,930 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-29 03:20:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:01,377 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 03:20:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:20:01,377 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 03:20:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:01,379 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:20:01,379 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:20:01,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:20:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:20:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 03:20:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:20:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 03:20:01,387 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-29 03:20:01,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:01,387 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 03:20:01,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:20:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 03:20:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:20:01,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:01,389 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:01,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:20:01,389 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:01,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:01,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1568618783, now seen corresponding path program 9 times [2020-10-29 03:20:01,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:01,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006985468] [2020-10-29 03:20:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:06,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:06,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:06,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:06,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:06,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 03:20:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:20:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:20:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:06,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 03:20:06,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 03:20:06,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006985468] [2020-10-29 03:20:06,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:06,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:20:06,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46620507] [2020-10-29 03:20:06,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:20:06,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:20:06,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:20:06,844 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-29 03:20:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:07,300 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 03:20:07,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:20:07,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 03:20:07,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:07,304 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:20:07,304 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:20:07,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:20:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:20:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 03:20:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:20:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 03:20:07,319 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-29 03:20:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:07,322 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 03:20:07,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:20:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 03:20:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:20:07,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:07,324 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:07,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:20:07,324 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:07,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1503700611, now seen corresponding path program 10 times [2020-10-29 03:20:07,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:07,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282861974] [2020-10-29 03:20:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:07,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:20:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:12,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:12,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:12,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:12,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:12,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:12,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:12,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 03:20:12,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:20:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:12,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:12,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 03:20:12,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:12,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:20:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:12,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 03:20:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 03:20:12,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282861974] [2020-10-29 03:20:12,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:12,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:20:12,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849305689] [2020-10-29 03:20:12,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:20:12,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:12,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:20:12,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:20:12,803 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-29 03:20:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:13,254 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 03:20:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:20:13,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-29 03:20:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:13,255 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:20:13,255 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:20:13,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:20:13,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:20:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 03:20:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:20:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-29 03:20:13,263 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-29 03:20:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:13,264 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-29 03:20:13,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:20:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-29 03:20:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:20:13,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:13,265 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:13,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:20:13,265 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2139948197, now seen corresponding path program 11 times [2020-10-29 03:20:13,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:13,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131393655] [2020-10-29 03:20:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:20:18,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:20:18,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:18,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:18,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:20:18,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:20:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:20:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:18,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:18,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 03:20:18,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 03:20:18,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131393655] [2020-10-29 03:20:18,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:18,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:20:18,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816125261] [2020-10-29 03:20:18,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:20:18,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:18,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:20:18,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:20:18,882 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 15 states. [2020-10-29 03:20:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:19,484 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 03:20:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:20:19,485 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-29 03:20:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:19,486 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:20:19,486 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:20:19,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:20:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:20:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 03:20:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:20:19,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-29 03:20:19,506 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 100 [2020-10-29 03:20:19,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:19,507 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-29 03:20:19,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:20:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-29 03:20:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:20:19,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:19,509 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:19,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:20:19,509 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:19,510 INFO L82 PathProgramCache]: Analyzing trace with hash 384990905, now seen corresponding path program 12 times [2020-10-29 03:20:19,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:19,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329752242] [2020-10-29 03:20:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:19,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:20:24,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:20:24,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:20:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:24,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:24,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:24,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:24,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:24,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-29 03:20:24,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:24,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:24,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:24,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:20:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:25,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-29 03:20:25,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:25,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:20:25,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:20:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-29 03:20:25,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:25,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 03:20:25,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329752242] [2020-10-29 03:20:25,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:25,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:20:25,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654555580] [2020-10-29 03:20:25,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:20:25,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:25,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:20:25,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:20:25,534 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 16 states. [2020-10-29 03:20:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:26,016 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 03:20:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:20:26,016 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-29 03:20:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:26,017 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:20:26,017 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:20:26,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:20:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:20:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 03:20:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:20:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-29 03:20:26,025 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 106 [2020-10-29 03:20:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:26,026 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-29 03:20:26,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:20:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-29 03:20:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:20:26,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:26,027 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:26,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:20:26,027 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:26,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:26,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2075018135, now seen corresponding path program 13 times [2020-10-29 03:20:26,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:26,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097790019] [2020-10-29 03:20:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:31,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:31,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-29 03:20:31,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:20:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:31,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 03:20:31,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:31,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:20:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 03:20:31,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 03:20:31,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097790019] [2020-10-29 03:20:31,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:31,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:20:31,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558962958] [2020-10-29 03:20:31,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:20:31,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:31,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:20:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:20:31,916 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 17 states. [2020-10-29 03:20:32,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:32,513 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 03:20:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:20:32,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-29 03:20:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:32,515 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:20:32,515 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:20:32,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:20:32,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:20:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 03:20:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:20:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-29 03:20:32,523 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 112 [2020-10-29 03:20:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:32,523 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-29 03:20:32,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:20:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-29 03:20:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:20:32,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:32,525 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:32,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:20:32,525 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:32,526 INFO L82 PathProgramCache]: Analyzing trace with hash 487500277, now seen corresponding path program 14 times [2020-10-29 03:20:32,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:32,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493615482] [2020-10-29 03:20:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:32,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:37,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:20:37,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:20:37,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:37,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 03:20:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:37,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:37,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:37,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:37,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:37,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:37,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:37,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:37,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:37,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:37,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 03:20:37,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:37,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:20:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:38,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 03:20:38,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:20:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:38,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 03:20:38,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 03:20:38,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493615482] [2020-10-29 03:20:38,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:38,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:20:38,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177134507] [2020-10-29 03:20:38,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:20:38,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:38,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:20:38,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:20:38,337 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 18 states. [2020-10-29 03:20:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:38,898 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 03:20:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:20:38,899 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-29 03:20:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:38,900 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:20:38,900 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:20:38,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:20:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:20:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 03:20:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:20:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-29 03:20:38,908 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 118 [2020-10-29 03:20:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:38,909 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-29 03:20:38,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:20:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-29 03:20:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:20:38,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:38,911 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:38,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:20:38,911 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:38,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1139535405, now seen corresponding path program 15 times [2020-10-29 03:20:38,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:38,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558952856] [2020-10-29 03:20:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:43,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 03:20:43,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:20:43,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:43,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:43,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:43,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:43,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:43,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:43,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:43,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:43,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:43,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:43,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:43,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:44,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 03:20:44,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:20:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:44,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:20:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:44,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 03:20:44,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558952856] [2020-10-29 03:20:44,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:44,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:20:44,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702402400] [2020-10-29 03:20:44,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:20:44,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:20:44,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:20:44,753 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 19 states. [2020-10-29 03:20:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:45,436 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 03:20:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:20:45,436 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-10-29 03:20:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:45,437 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:20:45,437 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:20:45,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:20:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:20:45,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 03:20:45,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:20:45,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-29 03:20:45,445 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 124 [2020-10-29 03:20:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:45,446 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-29 03:20:45,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:20:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-29 03:20:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:20:45,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:45,447 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:45,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:20:45,448 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash -497624271, now seen corresponding path program 16 times [2020-10-29 03:20:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:45,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587684262] [2020-10-29 03:20:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:50,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 03:20:50,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:20:50,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:50,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:50,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:50,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:50,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:20:50,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:50,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:50,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:50,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:50,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:50,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 03:20:50,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:50,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:20:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:50,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:20:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:51,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 03:20:51,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 03:20:51,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587684262] [2020-10-29 03:20:51,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:51,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:20:51,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361033443] [2020-10-29 03:20:51,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:20:51,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:51,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:20:51,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:20:51,388 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 20 states. [2020-10-29 03:20:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:52,152 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 03:20:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:20:52,152 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-10-29 03:20:52,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:52,153 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:20:52,154 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:20:52,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:20:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:20:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 03:20:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:20:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-29 03:20:52,162 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 130 [2020-10-29 03:20:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:52,162 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-29 03:20:52,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:20:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-29 03:20:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:20:52,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:52,164 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:52,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:20:52,164 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:52,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:52,166 INFO L82 PathProgramCache]: Analyzing trace with hash -670603761, now seen corresponding path program 17 times [2020-10-29 03:20:52,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:52,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946751623] [2020-10-29 03:20:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:57,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:20:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:20:57,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:57,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:20:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:57,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:57,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:57,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:20:57,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:57,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:20:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:20:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:20:58,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 03:20:58,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:20:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:20:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 03:20:58,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946751623] [2020-10-29 03:20:58,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:58,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:20:58,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338424765] [2020-10-29 03:20:58,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:20:58,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:58,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:20:58,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:20:58,216 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 21 states. [2020-10-29 03:20:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:59,044 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 03:20:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:20:59,044 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-10-29 03:20:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:59,045 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:20:59,046 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:20:59,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:20:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:20:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 03:20:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:20:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-29 03:20:59,054 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 136 [2020-10-29 03:20:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:59,054 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-29 03:20:59,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:20:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-29 03:20:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 03:20:59,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:59,056 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:20:59,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:20:59,056 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:59,057 INFO L82 PathProgramCache]: Analyzing trace with hash 435032685, now seen corresponding path program 18 times [2020-10-29 03:20:59,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:59,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127639983] [2020-10-29 03:20:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:04,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:04,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:04,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:21:04,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:04,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:04,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:04,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:04,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 03:21:04,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:04,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:21:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:21:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:05,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 03:21:05,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127639983] [2020-10-29 03:21:05,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:05,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:21:05,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497656089] [2020-10-29 03:21:05,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:21:05,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:05,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:21:05,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:21:05,235 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 22 states. [2020-10-29 03:21:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:06,076 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 03:21:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:21:06,077 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-29 03:21:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:06,080 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:21:06,080 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:21:06,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:21:06,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:21:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 03:21:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:21:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-29 03:21:06,094 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 142 [2020-10-29 03:21:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:06,095 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-29 03:21:06,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:21:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-29 03:21:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:21:06,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:06,097 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:06,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:21:06,098 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:06,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:06,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1332428875, now seen corresponding path program 19 times [2020-10-29 03:21:06,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:06,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641080322] [2020-10-29 03:21:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:11,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 03:21:11,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:21:11,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:11,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:11,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:11,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:11,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:11,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:11,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:11,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:11,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:11,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:11,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:11,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:11,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-29 03:21:11,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:11,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:11,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:11,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:11,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:11,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:21:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:12,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:12,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:12,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-29 03:21:12,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:12,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:21:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:12,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:12,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:12,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-29 03:21:12,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:12,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:12,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 03:21:12,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641080322] [2020-10-29 03:21:12,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:12,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:21:12,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197285305] [2020-10-29 03:21:12,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:21:12,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:12,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:21:12,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:21:12,755 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 23 states. [2020-10-29 03:21:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:13,636 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 03:21:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:21:13,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2020-10-29 03:21:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:13,637 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:21:13,637 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:21:13,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:21:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:21:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 03:21:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:21:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 03:21:13,646 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 148 [2020-10-29 03:21:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:13,646 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 03:21:13,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:21:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 03:21:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 03:21:13,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:13,648 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:13,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:21:13,648 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1065922647, now seen corresponding path program 20 times [2020-10-29 03:21:13,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:13,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117197694] [2020-10-29 03:21:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:18,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:19,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:19,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:19,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 03:21:19,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:19,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:21:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:19,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:21:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:20,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:20,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:20,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-29 03:21:20,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:20,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:20,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 03:21:20,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117197694] [2020-10-29 03:21:20,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:20,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:21:20,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711549251] [2020-10-29 03:21:20,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:21:20,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:20,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:21:20,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:21:20,168 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 24 states. [2020-10-29 03:21:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:21,117 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-29 03:21:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:21:21,118 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 154 [2020-10-29 03:21:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:21,120 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:21:21,120 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:21:21,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:21:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:21:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 03:21:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:21:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-29 03:21:21,127 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 154 [2020-10-29 03:21:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:21,127 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-29 03:21:21,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:21:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-29 03:21:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:21:21,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:21,128 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:21,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:21:21,129 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1268949127, now seen corresponding path program 21 times [2020-10-29 03:21:21,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:21,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500191508] [2020-10-29 03:21:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:26,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:26,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:21:26,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:21:26,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:26,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 03:21:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:26,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:26,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:26,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:26,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:26,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:26,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:26,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:26,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:26,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:21:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:21:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:27,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:27,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:27,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-29 03:21:27,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:27,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-29 03:21:27,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500191508] [2020-10-29 03:21:27,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:27,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:21:27,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918408487] [2020-10-29 03:21:27,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:21:27,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:27,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:21:27,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:21:27,677 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 25 states. [2020-10-29 03:21:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:28,644 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-29 03:21:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:21:28,647 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 160 [2020-10-29 03:21:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:28,648 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:21:28,648 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:21:28,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:21:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:21:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 03:21:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:21:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-29 03:21:28,655 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 160 [2020-10-29 03:21:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:28,655 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-29 03:21:28,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:21:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-29 03:21:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 03:21:28,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:28,656 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:28,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:21:28,657 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:28,657 INFO L82 PathProgramCache]: Analyzing trace with hash -602565915, now seen corresponding path program 22 times [2020-10-29 03:21:28,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:28,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204594812] [2020-10-29 03:21:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:33,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:33,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 03:21:33,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:21:33,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:33,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:33,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:33,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:33,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:33,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:33,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:34,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:21:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:34,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:21:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:35,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:35,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:35,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-29 03:21:35,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:35,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:21:35,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204594812] [2020-10-29 03:21:35,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:35,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:21:35,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077469088] [2020-10-29 03:21:35,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:21:35,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:35,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:21:35,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:21:35,406 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 26 states. [2020-10-29 03:21:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:36,520 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-29 03:21:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:21:36,521 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 166 [2020-10-29 03:21:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:36,522 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:21:36,522 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:21:36,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:21:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:21:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 03:21:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:21:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-29 03:21:36,530 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 166 [2020-10-29 03:21:36,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:36,531 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-29 03:21:36,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:21:36,531 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-29 03:21:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 03:21:36,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:36,532 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:36,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:21:36,533 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:36,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:36,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1603307203, now seen corresponding path program 23 times [2020-10-29 03:21:36,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:36,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880430262] [2020-10-29 03:21:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:41,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 03:21:41,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:41,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 03:21:41,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:41,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:41,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:41,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:41,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:41,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:41,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:21:41,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:41,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:41,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:41,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:42,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:21:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:42,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:43,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:21:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:43,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-29 03:21:43,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:43,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-29 03:21:43,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880430262] [2020-10-29 03:21:43,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:43,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:21:43,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363392845] [2020-10-29 03:21:43,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:21:43,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:43,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:21:43,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:21:43,546 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 27 states. [2020-10-29 03:21:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:44,632 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-29 03:21:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:21:44,632 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 172 [2020-10-29 03:21:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:44,633 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:21:44,633 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:21:44,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:21:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:21:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 03:21:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:21:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-29 03:21:44,642 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 172 [2020-10-29 03:21:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:44,643 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-29 03:21:44,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:21:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-29 03:21:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 03:21:44,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:44,644 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:44,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:21:44,646 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:44,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:44,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1013701665, now seen corresponding path program 24 times [2020-10-29 03:21:44,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:44,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033894229] [2020-10-29 03:21:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:49,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:49,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 03:21:49,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:21:49,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:49,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:49,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:49,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:49,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:21:49,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:49,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:49,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:49,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:50,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:50,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:50,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 03:21:50,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:50,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:50,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:21:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:51,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:51,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-29 03:21:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:51,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:21:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:51,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:51,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-29 03:21:51,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:51,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:51,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:51,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 03:21:51,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033894229] [2020-10-29 03:21:51,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:51,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:21:51,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624464971] [2020-10-29 03:21:51,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:21:51,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:51,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:21:51,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:21:51,690 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 28 states. [2020-10-29 03:21:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:52,896 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-29 03:21:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:21:52,896 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 178 [2020-10-29 03:21:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:52,898 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:21:52,898 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:21:52,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:21:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:21:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 03:21:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:21:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-29 03:21:52,907 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 178 [2020-10-29 03:21:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:52,908 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-29 03:21:52,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:21:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-29 03:21:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:21:52,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:52,909 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:21:52,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:21:52,909 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:52,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:52,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1201140479, now seen corresponding path program 25 times [2020-10-29 03:21:52,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:52,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052038267] [2020-10-29 03:21:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:52,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:57,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:21:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:21:58,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:58,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:58,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:58,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:58,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:58,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:21:58,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-29 03:21:58,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:58,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:21:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:21:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:21:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:59,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:21:59,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-29 03:21:59,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:59,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:21:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:59,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:21:59,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:21:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:00,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-29 03:22:00,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:00,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-29 03:22:00,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052038267] [2020-10-29 03:22:00,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:00,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:22:00,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195817965] [2020-10-29 03:22:00,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:22:00,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:00,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:22:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:22:00,119 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 29 states. [2020-10-29 03:22:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:01,433 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-29 03:22:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:22:01,433 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 184 [2020-10-29 03:22:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:01,434 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:22:01,434 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:22:01,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:22:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:22:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 03:22:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:22:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-29 03:22:01,445 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 184 [2020-10-29 03:22:01,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:01,445 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-29 03:22:01,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:22:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-29 03:22:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 03:22:01,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:01,447 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:01,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:22:01,447 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:01,448 INFO L82 PathProgramCache]: Analyzing trace with hash 983378781, now seen corresponding path program 26 times [2020-10-29 03:22:01,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:01,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319032805] [2020-10-29 03:22:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:01,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:06,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:06,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:06,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:06,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:06,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:06,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:06,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:07,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:22:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:08,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:08,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-29 03:22:08,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:08,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:08,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:22:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:08,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-29 03:22:08,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319032805] [2020-10-29 03:22:08,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:08,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:22:08,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831823576] [2020-10-29 03:22:08,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:22:08,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:08,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:22:08,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:22:08,557 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 30 states. [2020-10-29 03:22:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:09,938 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-29 03:22:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:22:09,939 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 190 [2020-10-29 03:22:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:09,940 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:22:09,940 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:22:09,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:22:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:22:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 03:22:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:22:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-29 03:22:09,949 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 190 [2020-10-29 03:22:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:09,949 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-29 03:22:09,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:22:09,949 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-29 03:22:09,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 03:22:09,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:09,950 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:09,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:22:09,951 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:09,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:09,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1449401029, now seen corresponding path program 27 times [2020-10-29 03:22:09,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:09,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14633923] [2020-10-29 03:22:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:09,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:15,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:15,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 03:22:15,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-29 03:22:15,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:15,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:15,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:15,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:15,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:15,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-29 03:22:15,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:15,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:16,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:22:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:16,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:16,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-29 03:22:16,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:16,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:16,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:22:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:17,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:17,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:17,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-29 03:22:17,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:17,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-29 03:22:17,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14633923] [2020-10-29 03:22:17,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:17,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:22:17,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451353295] [2020-10-29 03:22:17,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:22:17,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:17,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:22:17,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:22:17,435 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 31 states. [2020-10-29 03:22:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:18,850 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-29 03:22:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:22:18,850 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 196 [2020-10-29 03:22:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:18,851 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:22:18,851 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:22:18,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:22:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:22:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 03:22:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:22:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-29 03:22:18,863 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 196 [2020-10-29 03:22:18,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:18,863 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-29 03:22:18,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:22:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-29 03:22:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:22:18,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:18,865 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:18,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:22:18,865 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:18,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:18,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2035056793, now seen corresponding path program 28 times [2020-10-29 03:22:18,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:18,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584596970] [2020-10-29 03:22:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:19,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 03:22:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:22:23,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:23,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 03:22:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:23,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:23,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:23,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:22:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:23,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:24,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:24,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:24,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-29 03:22:24,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:24,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:25,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:22:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:25,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:25,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:25,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-29 03:22:25,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:25,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:22:25,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:22:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:25,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:26,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:26,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:26,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:26,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-29 03:22:26,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:26,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:26,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:26,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:26,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-29 03:22:26,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584596970] [2020-10-29 03:22:26,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:26,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:22:26,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288776417] [2020-10-29 03:22:26,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:22:26,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:22:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:22:26,497 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 32 states. [2020-10-29 03:22:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:27,856 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-29 03:22:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:22:27,857 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-10-29 03:22:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:27,858 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:22:27,858 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:22:27,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:22:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:22:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 03:22:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:22:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-29 03:22:27,871 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 202 [2020-10-29 03:22:27,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:27,872 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-29 03:22:27,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:22:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-29 03:22:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 03:22:27,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:27,873 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:27,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:22:27,874 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:27,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:27,874 INFO L82 PathProgramCache]: Analyzing trace with hash -721461897, now seen corresponding path program 29 times [2020-10-29 03:22:27,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:27,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347688671] [2020-10-29 03:22:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:27,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:27,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:32,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:32,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 03:22:32,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:22:32,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:32,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 03:22:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:32,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:32,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:32,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:32,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:32,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:32,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:32,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:33,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:33,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:33,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-29 03:22:33,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:33,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:22:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:35,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-29 03:22:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:35,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:35,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 03:22:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:35,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:35,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 03:22:35,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347688671] [2020-10-29 03:22:35,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:35,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:22:35,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252135426] [2020-10-29 03:22:35,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:22:35,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:35,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:22:35,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:22:35,949 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 33 states. [2020-10-29 03:22:37,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:37,409 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-29 03:22:37,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:22:37,409 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 208 [2020-10-29 03:22:37,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:37,410 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:22:37,410 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:22:37,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:22:37,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:22:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 03:22:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:22:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-29 03:22:37,420 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 208 [2020-10-29 03:22:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:37,420 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-29 03:22:37,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:22:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-29 03:22:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 03:22:37,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:37,422 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:37,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:22:37,422 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:37,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:37,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1533223979, now seen corresponding path program 30 times [2020-10-29 03:22:37,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:37,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223007238] [2020-10-29 03:22:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:37,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:42,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:42,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:42,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:42,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:42,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:42,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:43,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:22:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:44,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:44,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:44,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-29 03:22:44,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:44,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:44,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:22:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:45,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:45,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:45,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:45,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-29 03:22:45,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:45,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-29 03:22:45,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223007238] [2020-10-29 03:22:45,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:45,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:22:45,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242590911] [2020-10-29 03:22:45,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:22:45,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:45,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:22:45,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:22:45,337 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 34 states. [2020-10-29 03:22:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:46,949 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-29 03:22:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:22:46,950 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 214 [2020-10-29 03:22:46,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:46,951 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:22:46,951 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:22:46,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:22:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:22:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 03:22:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:22:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-29 03:22:46,971 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 214 [2020-10-29 03:22:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:46,971 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-29 03:22:46,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:22:46,971 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-29 03:22:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 03:22:46,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:46,973 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:46,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:22:46,973 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:46,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2103092301, now seen corresponding path program 31 times [2020-10-29 03:22:46,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:46,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087505959] [2020-10-29 03:22:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:46,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:52,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:52,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 03:22:52,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:22:52,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:52,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:22:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:22:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:52,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:52,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:52,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:22:52,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:52,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:52,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:52,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:52,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:22:52,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-10-29 03:22:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:52,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:22:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:22:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:53,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:22:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:54,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:54,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:22:54,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:54,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-29 03:22:54,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:54,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:22:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:54,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:22:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:22:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:54,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:55,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:55,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:22:55,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:55,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-29 03:22:55,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:55,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:22:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:22:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-29 03:22:55,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087505959] [2020-10-29 03:22:55,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:55,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:22:55,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266862860] [2020-10-29 03:22:55,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:22:55,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:55,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:22:55,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:22:55,202 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 35 states. [2020-10-29 03:22:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:56,969 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-29 03:22:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:22:56,970 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 220 [2020-10-29 03:22:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:56,971 INFO L225 Difference]: With dead ends: 172 [2020-10-29 03:22:56,971 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:22:56,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 03:22:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:22:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-29 03:22:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:22:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-29 03:22:56,980 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 220 [2020-10-29 03:22:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:56,980 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-29 03:22:56,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:22:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-29 03:22:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 03:22:56,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:56,982 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:56,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:22:56,982 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash 842087697, now seen corresponding path program 32 times [2020-10-29 03:22:56,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:56,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553609872] [2020-10-29 03:22:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking...