/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/eca-rers2012/Problem18_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:30:02,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:30:02,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:30:02,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:30:02,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:30:02,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:30:02,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:30:02,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:30:02,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:30:02,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:30:02,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:30:02,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:30:02,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:30:02,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:30:02,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:30:02,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:30:02,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:30:02,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:30:02,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:30:02,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:30:02,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:30:02,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:30:02,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:30:02,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:30:02,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:30:02,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:30:02,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:30:02,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:30:02,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:30:02,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:30:02,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:30:02,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:30:02,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:30:02,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:30:02,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:30:02,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:30:02,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:30:02,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:30:02,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:30:02,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:30:02,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:30:02,627 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 08:30:02,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:30:02,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:30:02,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:30:02,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:30:02,678 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:30:02,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:30:02,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:30:02,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:30:02,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:30:02,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:30:02,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:30:02,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:30:02,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:30:02,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:30:02,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:30:02,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:30:02,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:30:02,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:30:02,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:30:02,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:30:02,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:30:02,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:30:02,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:30:02,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:30:02,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:30:02,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:30:02,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:30:02,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:30:02,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:30:02,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:30:03,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:30:03,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:30:03,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:30:03,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:30:03,113 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:30:03,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label15.c [2020-10-29 08:30:03,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff4d32cb/d1669e534a634001ac261f743c5b4492/FLAG967577d2f [2020-10-29 08:30:04,175 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:30:04,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label15.c [2020-10-29 08:30:04,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff4d32cb/d1669e534a634001ac261f743c5b4492/FLAG967577d2f [2020-10-29 08:30:04,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff4d32cb/d1669e534a634001ac261f743c5b4492 [2020-10-29 08:30:04,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:30:04,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:30:04,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:30:04,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:30:04,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:30:04,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:30:04" (1/1) ... [2020-10-29 08:30:04,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e98f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:04, skipping insertion in model container [2020-10-29 08:30:04,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:30:04" (1/1) ... [2020-10-29 08:30:04,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:30:04,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:30:05,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:30:05,994 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:30:06,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:30:06,517 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:30:06,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06 WrapperNode [2020-10-29 08:30:06,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:30:06,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:30:06,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:30:06,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:30:06,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (1/1) ... [2020-10-29 08:30:06,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (1/1) ... [2020-10-29 08:30:06,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (1/1) ... [2020-10-29 08:30:06,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (1/1) ... [2020-10-29 08:30:06,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (1/1) ... [2020-10-29 08:30:06,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (1/1) ... [2020-10-29 08:30:06,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (1/1) ... [2020-10-29 08:30:06,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:30:06,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:30:06,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:30:06,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:30:06,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (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 08:30:06,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:30:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:30:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:30:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:30:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:30:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:30:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:30:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:30:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:30:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:30:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:30:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:30:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:30:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:30:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:30:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:30:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:30:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:30:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:30:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:30:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:30:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:30:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:30:10,571 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:30:10,571 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:30:10,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:30:10 BoogieIcfgContainer [2020-10-29 08:30:10,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:30:10,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:30:10,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:30:10,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:30:10,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:30:04" (1/3) ... [2020-10-29 08:30:10,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245743b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:30:10, skipping insertion in model container [2020-10-29 08:30:10,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:30:06" (2/3) ... [2020-10-29 08:30:10,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245743b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:30:10, skipping insertion in model container [2020-10-29 08:30:10,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:30:10" (3/3) ... [2020-10-29 08:30:10,583 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label15.c [2020-10-29 08:30:10,594 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:30:10,600 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:30:10,613 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:30:10,645 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:30:10,645 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:30:10,646 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:30:10,646 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:30:10,646 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:30:10,646 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:30:10,646 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:30:10,646 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:30:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:30:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 08:30:10,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:10,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:10,687 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:10,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1740718896, now seen corresponding path program 1 times [2020-10-29 08:30:10,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:10,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681090167] [2020-10-29 08:30:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:11,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:11,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 08:30:11,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-29 08:30:11,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:11,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 08:30:11,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:30:11,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:11,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:30:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:11,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:11,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681090167] [2020-10-29 08:30:11,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:11,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:30:11,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603027064] [2020-10-29 08:30:11,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:30:11,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:11,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:30:11,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:30:11,605 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-29 08:30:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:20,141 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-29 08:30:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:30:20,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-29 08:30:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:20,176 INFO L225 Difference]: With dead ends: 2275 [2020-10-29 08:30:20,176 INFO L226 Difference]: Without dead ends: 1433 [2020-10-29 08:30:20,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:30:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-29 08:30:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-29 08:30:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-29 08:30:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-29 08:30:20,345 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 42 [2020-10-29 08:30:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:20,345 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-29 08:30:20,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:30:20,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-29 08:30:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 08:30:20,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:20,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:20,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:30:20,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1892145480, now seen corresponding path program 1 times [2020-10-29 08:30:20,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:20,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809638894] [2020-10-29 08:30:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:21,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:21,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 08:30:21,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:21,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-29 08:30:21,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:21,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:30:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:30:21,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:21,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:30:21,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:21,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:21,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:21,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:30:21,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 08:30:21,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:21,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:30:21,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:21,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809638894] [2020-10-29 08:30:21,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:21,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:30:21,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123689174] [2020-10-29 08:30:21,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:21,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:21,829 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-29 08:30:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:32,413 INFO L93 Difference]: Finished difference Result 4354 states and 6840 transitions. [2020-10-29 08:30:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:30:32,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-29 08:30:32,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:32,431 INFO L225 Difference]: With dead ends: 4354 [2020-10-29 08:30:32,431 INFO L226 Difference]: Without dead ends: 2934 [2020-10-29 08:30:32,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:30:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-29 08:30:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2879. [2020-10-29 08:30:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-29 08:30:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3877 transitions. [2020-10-29 08:30:32,521 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3877 transitions. Word has length 112 [2020-10-29 08:30:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:32,522 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 3877 transitions. [2020-10-29 08:30:32,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3877 transitions. [2020-10-29 08:30:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 08:30:32,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:32,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:32,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:30:32,525 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:32,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1877145584, now seen corresponding path program 1 times [2020-10-29 08:30:32,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:32,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107169384] [2020-10-29 08:30:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:33,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:33,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:30:33,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:30:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-29 08:30:33,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:33,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:30:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:30:33,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:33,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:33,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:33,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:30:33,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:33,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:33,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:33,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:33,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:30:33,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:33,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 08:30:33,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:33,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:30:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:30:33,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107169384] [2020-10-29 08:30:33,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:30:33,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:30:33,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888015391] [2020-10-29 08:30:33,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:33,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:33,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:33,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:33,853 INFO L87 Difference]: Start difference. First operand 2879 states and 3877 transitions. Second operand 7 states. [2020-10-29 08:30:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:45,018 INFO L93 Difference]: Finished difference Result 8802 states and 12016 transitions. [2020-10-29 08:30:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:30:45,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-29 08:30:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:45,048 INFO L225 Difference]: With dead ends: 8802 [2020-10-29 08:30:45,049 INFO L226 Difference]: Without dead ends: 5929 [2020-10-29 08:30:45,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:30:45,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2020-10-29 08:30:45,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 5842. [2020-10-29 08:30:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5842 states. [2020-10-29 08:30:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 7282 transitions. [2020-10-29 08:30:45,218 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 7282 transitions. Word has length 132 [2020-10-29 08:30:45,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:45,222 INFO L481 AbstractCegarLoop]: Abstraction has 5842 states and 7282 transitions. [2020-10-29 08:30:45,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:45,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 7282 transitions. [2020-10-29 08:30:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 08:30:45,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:45,239 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:45,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:30:45,243 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash -46540410, now seen corresponding path program 1 times [2020-10-29 08:30:45,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:45,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487829393] [2020-10-29 08:30:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:45,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:48,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:48,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 08:30:48,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:30:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3389 [2020-10-29 08:30:48,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:48,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:30:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:48,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:48,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:48,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:48,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:30:48,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:48,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:48,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:30:49,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 08:30:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:49,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:30:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:30:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:30:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:30:49,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:49,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:30:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 68 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:30:49,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487829393] [2020-10-29 08:30:49,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:49,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:30:49,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030434306] [2020-10-29 08:30:49,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:49,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:49,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:49,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:49,459 INFO L87 Difference]: Start difference. First operand 5842 states and 7282 transitions. Second operand 7 states. [2020-10-29 08:30:58,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:58,969 INFO L93 Difference]: Finished difference Result 14719 states and 18094 transitions. [2020-10-29 08:30:58,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:30:58,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-29 08:30:58,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:59,011 INFO L225 Difference]: With dead ends: 14719 [2020-10-29 08:30:59,011 INFO L226 Difference]: Without dead ends: 8883 [2020-10-29 08:30:59,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:30:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2020-10-29 08:30:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 8082. [2020-10-29 08:30:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8082 states. [2020-10-29 08:30:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 9794 transitions. [2020-10-29 08:30:59,218 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 9794 transitions. Word has length 237 [2020-10-29 08:30:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:59,219 INFO L481 AbstractCegarLoop]: Abstraction has 8082 states and 9794 transitions. [2020-10-29 08:30:59,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 9794 transitions. [2020-10-29 08:30:59,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-29 08:30:59,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:59,229 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:59,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:30:59,229 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:59,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:59,230 INFO L82 PathProgramCache]: Analyzing trace with hash 167824742, now seen corresponding path program 1 times [2020-10-29 08:30:59,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:59,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784316015] [2020-10-29 08:30:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:59,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:03,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:03,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-29 08:31:03,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:31:03,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4046 [2020-10-29 08:31:03,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:03,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:03,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-29 08:31:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:31:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:03,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:03,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:03,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:03,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:31:03,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:03,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:03,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:03,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:03,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:03,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:03,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:31:03,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:31:03,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:03,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:31:03,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:31:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-29 08:31:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:03,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:03,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:31:03,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 08:31:03,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:03,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:31:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:04,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-29 08:31:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:04,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:04,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:31:04,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:31:04,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:04,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:31:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 225 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 08:31:04,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784316015] [2020-10-29 08:31:04,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:04,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:31:04,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111122716] [2020-10-29 08:31:04,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:31:04,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:04,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:31:04,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:31:04,586 INFO L87 Difference]: Start difference. First operand 8082 states and 9794 transitions. Second operand 8 states. [2020-10-29 08:31:23,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:23,715 INFO L93 Difference]: Finished difference Result 24162 states and 29420 transitions. [2020-10-29 08:31:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:31:23,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 423 [2020-10-29 08:31:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:23,768 INFO L225 Difference]: With dead ends: 24162 [2020-10-29 08:31:23,768 INFO L226 Difference]: Without dead ends: 13154 [2020-10-29 08:31:23,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:31:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13154 states. [2020-10-29 08:31:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13154 to 10947. [2020-10-29 08:31:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10947 states. [2020-10-29 08:31:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10947 states to 10947 states and 12043 transitions. [2020-10-29 08:31:24,061 INFO L78 Accepts]: Start accepts. Automaton has 10947 states and 12043 transitions. Word has length 423 [2020-10-29 08:31:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:24,062 INFO L481 AbstractCegarLoop]: Abstraction has 10947 states and 12043 transitions. [2020-10-29 08:31:24,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:31:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10947 states and 12043 transitions. [2020-10-29 08:31:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-29 08:31:24,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:24,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:24,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:31:24,072 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:24,073 INFO L82 PathProgramCache]: Analyzing trace with hash 460853280, now seen corresponding path program 1 times [2020-10-29 08:31:24,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:24,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068197247] [2020-10-29 08:31:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-29 08:31:29,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:31:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 08:31:29,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:31:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:31:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:29,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:29,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:29,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:31:29,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:29,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:30,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:30,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:31:30,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-29 08:31:30,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:30,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:31:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:31:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:30,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:30,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:30,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:31:30,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:31:30,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:30,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:31:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:31:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:31:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:30,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:30,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:31:30,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:30,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:31:30,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:30,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 08:31:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:30,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 68 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:31:30,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068197247] [2020-10-29 08:31:30,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:30,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:31:30,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510753945] [2020-10-29 08:31:30,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:30,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:30,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:30,818 INFO L87 Difference]: Start difference. First operand 10947 states and 12043 transitions. Second operand 7 states. [2020-10-29 08:31:30,951 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 08:31:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:40,793 INFO L93 Difference]: Finished difference Result 28633 states and 32192 transitions. [2020-10-29 08:31:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:31:40,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 439 [2020-10-29 08:31:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:40,843 INFO L225 Difference]: With dead ends: 28633 [2020-10-29 08:31:40,844 INFO L226 Difference]: Without dead ends: 17692 [2020-10-29 08:31:40,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:31:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17692 states. [2020-10-29 08:31:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17692 to 16824. [2020-10-29 08:31:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16824 states. [2020-10-29 08:31:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16824 states to 16824 states and 18554 transitions. [2020-10-29 08:31:41,365 INFO L78 Accepts]: Start accepts. Automaton has 16824 states and 18554 transitions. Word has length 439 [2020-10-29 08:31:41,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:41,366 INFO L481 AbstractCegarLoop]: Abstraction has 16824 states and 18554 transitions. [2020-10-29 08:31:41,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:41,366 INFO L276 IsEmpty]: Start isEmpty. Operand 16824 states and 18554 transitions. [2020-10-29 08:31:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2020-10-29 08:31:41,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:41,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:41,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:31:41,403 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:41,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1773122690, now seen corresponding path program 1 times [2020-10-29 08:31:41,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:41,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842343133] [2020-10-29 08:31:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:45,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:45,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-29 08:31:45,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:31:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4001 [2020-10-29 08:31:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:45,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:31:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:31:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:45,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:45,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:45,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:45,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:31:45,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:45,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:46,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:46,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:31:46,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 08:31:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:46,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:46,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:46,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:46,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:31:46,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:46,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:31:46,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:46,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:46,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:31:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:46,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:46,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:31:46,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:31:46,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:46,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:31:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:46,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:46,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:31:46,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 08:31:46,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:46,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:31:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:46,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:46,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:31:46,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:46,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:31:46,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:46,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:31:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:31:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:46,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:46,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:31:46,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 08:31:46,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:46,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:31:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:31:47,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842343133] [2020-10-29 08:31:47,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:47,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:31:47,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177285807] [2020-10-29 08:31:47,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:47,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:47,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:47,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:47,571 INFO L87 Difference]: Start difference. First operand 16824 states and 18554 transitions. Second operand 7 states. [2020-10-29 08:31:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:57,248 INFO L93 Difference]: Finished difference Result 38956 states and 44061 transitions. [2020-10-29 08:31:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:31:57,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 966 [2020-10-29 08:31:57,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:57,304 INFO L225 Difference]: With dead ends: 38956 [2020-10-29 08:31:57,304 INFO L226 Difference]: Without dead ends: 22063 [2020-10-29 08:31:57,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:31:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22063 states. [2020-10-29 08:31:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22063 to 21941. [2020-10-29 08:31:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21941 states. [2020-10-29 08:31:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21941 states to 21941 states and 24157 transitions. [2020-10-29 08:31:57,704 INFO L78 Accepts]: Start accepts. Automaton has 21941 states and 24157 transitions. Word has length 966 [2020-10-29 08:31:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:57,706 INFO L481 AbstractCegarLoop]: Abstraction has 21941 states and 24157 transitions. [2020-10-29 08:31:57,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:31:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 21941 states and 24157 transitions. [2020-10-29 08:31:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2020-10-29 08:31:57,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:57,759 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:57,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:31:57,759 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:57,760 INFO L82 PathProgramCache]: Analyzing trace with hash 472674312, now seen corresponding path program 1 times [2020-10-29 08:31:57,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:57,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184654410] [2020-10-29 08:31:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:58,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:03,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:03,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-29 08:32:03,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:32:03,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:32:03,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:03,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:32:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:32:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:03,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:03,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:03,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:03,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:03,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:03,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:03,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:03,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:03,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:03,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:03,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:03,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 08:32:03,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:03,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:03,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:03,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:03,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:03,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 08:32:03,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:03,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:03,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:03,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:03,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:03,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:32:03,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:03,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:04,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:04,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:04,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 08:32:04,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:04,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:32:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:04,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:32:04,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:04,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:32:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:04,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:04,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:32:04,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:04,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 08:32:04,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:04,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:04,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:32:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:04,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-29 08:32:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:04,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:32:04,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:32:04,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:04,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 08:32:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 298 proven. 75 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-29 08:32:05,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184654410] [2020-10-29 08:32:05,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:05,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:05,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314845918] [2020-10-29 08:32:05,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:05,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:05,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:05,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:05,182 INFO L87 Difference]: Start difference. First operand 21941 states and 24157 transitions. Second operand 7 states. [2020-10-29 08:32:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:14,353 INFO L93 Difference]: Finished difference Result 56222 states and 62986 transitions. [2020-10-29 08:32:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:32:14,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1049 [2020-10-29 08:32:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:14,449 INFO L225 Difference]: With dead ends: 56222 [2020-10-29 08:32:14,449 INFO L226 Difference]: Without dead ends: 34989 [2020-10-29 08:32:14,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34989 states. [2020-10-29 08:32:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34989 to 34183. [2020-10-29 08:32:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34183 states. [2020-10-29 08:32:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34183 states to 34183 states and 38316 transitions. [2020-10-29 08:32:15,083 INFO L78 Accepts]: Start accepts. Automaton has 34183 states and 38316 transitions. Word has length 1049 [2020-10-29 08:32:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:15,085 INFO L481 AbstractCegarLoop]: Abstraction has 34183 states and 38316 transitions. [2020-10-29 08:32:15,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 34183 states and 38316 transitions. [2020-10-29 08:32:15,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2020-10-29 08:32:15,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:15,100 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:32:15,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:32:15,101 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:15,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:15,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1919593028, now seen corresponding path program 1 times [2020-10-29 08:32:15,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:15,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200647756] [2020-10-29 08:32:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:20,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:20,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1103 [2020-10-29 08:32:20,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:32:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 08:32:20,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:20,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:32:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:32:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:20,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:20,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:20,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:32:20,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:20,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:20,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:20,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:20,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:20,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 08:32:20,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:20,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:20,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:20,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:20,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:20,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:20,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:32:20,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:20,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:20,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:20,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:20,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:32:20,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:20,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:21,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:21,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:21,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 08:32:21,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:21,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:32:21,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:21,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:21,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:21,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:21,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:32:21,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:21,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:32:21,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:21,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:32:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:21,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-29 08:32:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:21,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 08:32:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:32:21,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:21,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 08:32:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 390 proven. 80 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2020-10-29 08:32:22,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200647756] [2020-10-29 08:32:22,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:22,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:22,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789914987] [2020-10-29 08:32:22,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:22,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:22,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:22,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:22,323 INFO L87 Difference]: Start difference. First operand 34183 states and 38316 transitions. Second operand 7 states. [2020-10-29 08:32:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:32,165 INFO L93 Difference]: Finished difference Result 71244 states and 79864 transitions. [2020-10-29 08:32:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:32:32,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1079 [2020-10-29 08:32:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:32,273 INFO L225 Difference]: With dead ends: 71244 [2020-10-29 08:32:32,273 INFO L226 Difference]: Without dead ends: 37769 [2020-10-29 08:32:32,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37769 states. [2020-10-29 08:32:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37769 to 37727. [2020-10-29 08:32:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37727 states. [2020-10-29 08:32:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37727 states to 37727 states and 42032 transitions. [2020-10-29 08:32:33,169 INFO L78 Accepts]: Start accepts. Automaton has 37727 states and 42032 transitions. Word has length 1079 [2020-10-29 08:32:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:33,170 INFO L481 AbstractCegarLoop]: Abstraction has 37727 states and 42032 transitions. [2020-10-29 08:32:33,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 37727 states and 42032 transitions. [2020-10-29 08:32:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-10-29 08:32:33,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:33,189 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:32:33,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:32:33,190 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:33,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:33,190 INFO L82 PathProgramCache]: Analyzing trace with hash -873532281, now seen corresponding path program 1 times [2020-10-29 08:32:33,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:33,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298361450] [2020-10-29 08:32:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:33,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1110 [2020-10-29 08:32:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:32:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 08:32:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-29 08:32:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:32:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 08:32:38,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:38,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 08:32:38,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:38,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:38,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:38,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:38,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:38,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:38,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:39,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:39,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 08:32:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:32:39,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:39,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-29 08:32:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:39,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:39,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:39,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 08:32:39,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:32:39,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:39,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 08:32:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:39,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-29 08:32:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:32:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 08:32:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:32:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-29 08:32:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:39,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:39,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 08:32:39,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:32:39,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:39,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 08:32:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:39,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 390 proven. 80 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2020-10-29 08:32:40,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298361450] [2020-10-29 08:32:40,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:40,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:40,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781990428] [2020-10-29 08:32:40,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:40,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:40,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:40,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:40,287 INFO L87 Difference]: Start difference. First operand 37727 states and 42032 transitions. Second operand 7 states. [2020-10-29 08:32:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:48,779 INFO L93 Difference]: Finished difference Result 74876 states and 83557 transitions. [2020-10-29 08:32:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:32:48,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1086 [2020-10-29 08:32:48,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:48,868 INFO L225 Difference]: With dead ends: 74876 [2020-10-29 08:32:48,869 INFO L226 Difference]: Without dead ends: 37857 [2020-10-29 08:32:48,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:32:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37857 states. [2020-10-29 08:32:49,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37857 to 37754. [2020-10-29 08:32:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37754 states. [2020-10-29 08:32:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37754 states to 37754 states and 42074 transitions. [2020-10-29 08:32:49,581 INFO L78 Accepts]: Start accepts. Automaton has 37754 states and 42074 transitions. Word has length 1086 [2020-10-29 08:32:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:49,582 INFO L481 AbstractCegarLoop]: Abstraction has 37754 states and 42074 transitions. [2020-10-29 08:32:49,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 37754 states and 42074 transitions. [2020-10-29 08:32:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2020-10-29 08:32:49,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:49,600 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:32:49,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:32:49,600 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:49,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1913441918, now seen corresponding path program 1 times [2020-10-29 08:32:49,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:49,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688982456] [2020-10-29 08:32:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:54,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:54,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1140 [2020-10-29 08:32:54,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:54,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4378 [2020-10-29 08:32:54,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:54,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-29 08:32:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:32:54,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:54,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:54,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:54,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:54,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:54,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:54,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:54,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:54,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:54,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:54,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:54,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:54,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:54,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 08:32:54,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:54,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:54,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:54,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:54,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:54,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:54,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:54,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:54,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:32:54,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:54,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:54,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:54,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:54,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:54,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:54,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:54,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:55,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:55,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:55,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:32:55,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:55,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:55,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:55,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:55,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:55,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:55,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:32:55,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:55,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 08:32:55,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:55,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:55,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:55,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:32:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:55,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:32:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:55,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:32:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-29 08:32:55,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688982456] [2020-10-29 08:32:55,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:55,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:55,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044168929] [2020-10-29 08:32:55,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:55,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:55,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:55,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:55,959 INFO L87 Difference]: Start difference. First operand 37754 states and 42074 transitions. Second operand 7 states. [2020-10-29 08:33:10,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:10,060 INFO L93 Difference]: Finished difference Result 83525 states and 94207 transitions. [2020-10-29 08:33:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:33:10,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1116 [2020-10-29 08:33:10,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:10,168 INFO L225 Difference]: With dead ends: 83525 [2020-10-29 08:33:10,168 INFO L226 Difference]: Without dead ends: 45775 [2020-10-29 08:33:10,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:33:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45775 states. [2020-10-29 08:33:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45775 to 44953. [2020-10-29 08:33:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44953 states. [2020-10-29 08:33:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44953 states to 44953 states and 49849 transitions. [2020-10-29 08:33:10,868 INFO L78 Accepts]: Start accepts. Automaton has 44953 states and 49849 transitions. Word has length 1116 [2020-10-29 08:33:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:10,870 INFO L481 AbstractCegarLoop]: Abstraction has 44953 states and 49849 transitions. [2020-10-29 08:33:10,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:33:10,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44953 states and 49849 transitions. [2020-10-29 08:33:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2020-10-29 08:33:10,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:10,886 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:10,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:33:10,886 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:10,887 INFO L82 PathProgramCache]: Analyzing trace with hash 920027554, now seen corresponding path program 1 times [2020-10-29 08:33:10,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:10,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126053244] [2020-10-29 08:33:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:11,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:11,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1154 [2020-10-29 08:33:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-29 08:33:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:11,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-29 08:33:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 08:33:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:12,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:33:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:12,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:12,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:12,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:12,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:33:12,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:12,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:33:12,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:12,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:12,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:12,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:12,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:33:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:12,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:12,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:33:12,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:12,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:33:12,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:12,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:12,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:12,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:33:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:12,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:12,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:33:12,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:33:12,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:12,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:13,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:13,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:33:13,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:33:13,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:13,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:33:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:13,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:13,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:33:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:13,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:13,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 08:33:13,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:13,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 08:33:13,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:13,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 08:33:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 141 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-29 08:33:13,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126053244] [2020-10-29 08:33:13,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:13,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:33:13,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225467331] [2020-10-29 08:33:13,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:33:13,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:13,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:33:13,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:33:13,887 INFO L87 Difference]: Start difference. First operand 44953 states and 49849 transitions. Second operand 5 states. [2020-10-29 08:33:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:22,863 INFO L93 Difference]: Finished difference Result 89948 states and 99795 transitions. [2020-10-29 08:33:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:33:22,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1130 [2020-10-29 08:33:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:22,963 INFO L225 Difference]: With dead ends: 89948 [2020-10-29 08:33:22,963 INFO L226 Difference]: Without dead ends: 44981 [2020-10-29 08:33:23,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:33:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44981 states. [2020-10-29 08:33:23,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44981 to 44936. [2020-10-29 08:33:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44936 states. [2020-10-29 08:33:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44936 states to 44936 states and 49050 transitions. [2020-10-29 08:33:23,681 INFO L78 Accepts]: Start accepts. Automaton has 44936 states and 49050 transitions. Word has length 1130 [2020-10-29 08:33:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:23,681 INFO L481 AbstractCegarLoop]: Abstraction has 44936 states and 49050 transitions. [2020-10-29 08:33:23,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:33:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 44936 states and 49050 transitions. [2020-10-29 08:33:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1228 [2020-10-29 08:33:23,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:23,701 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:23,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:33:23,701 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:23,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:23,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1407411908, now seen corresponding path program 1 times [2020-10-29 08:33:23,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:23,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172151230] [2020-10-29 08:33:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1253 [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4625 [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:33:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:28,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:33:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:28,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:28,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:33:28,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 08:33:28,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:28,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:28,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:29,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:29,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:33:29,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:33:29,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:29,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:33:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:33:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:33:29,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:29,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:29,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:33:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:29,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:29,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:33:29,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:33:29,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:29,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:29,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:33:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:29,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:29,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:33:29,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:29,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:33:29,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:29,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:29,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:33:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:29,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:33:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:33:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 08:33:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-29 08:33:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:29,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:33:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:33:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 561 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-29 08:33:30,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172151230] [2020-10-29 08:33:30,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:33:30,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:33:30,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160433384] [2020-10-29 08:33:30,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:33:30,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:30,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:33:30,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:33:30,354 INFO L87 Difference]: Start difference. First operand 44936 states and 49050 transitions. Second operand 7 states. [2020-10-29 08:33:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:33:41,521 INFO L93 Difference]: Finished difference Result 99271 states and 109032 transitions. [2020-10-29 08:33:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:33:41,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1227 [2020-10-29 08:33:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:33:41,612 INFO L225 Difference]: With dead ends: 99271 [2020-10-29 08:33:41,613 INFO L226 Difference]: Without dead ends: 55051 [2020-10-29 08:33:41,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:33:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55051 states. [2020-10-29 08:33:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55051 to 54265. [2020-10-29 08:33:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54265 states. [2020-10-29 08:33:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54265 states to 54265 states and 59347 transitions. [2020-10-29 08:33:42,477 INFO L78 Accepts]: Start accepts. Automaton has 54265 states and 59347 transitions. Word has length 1227 [2020-10-29 08:33:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:33:42,478 INFO L481 AbstractCegarLoop]: Abstraction has 54265 states and 59347 transitions. [2020-10-29 08:33:42,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:33:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 54265 states and 59347 transitions. [2020-10-29 08:33:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2020-10-29 08:33:42,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:42,993 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:42,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 08:33:42,993 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:42,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2079556834, now seen corresponding path program 1 times [2020-10-29 08:33:42,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:42,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586592635] [2020-10-29 08:33:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking...