/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:35:28,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:35:28,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:35:28,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:35:28,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:35:28,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:35:28,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:35:28,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:35:28,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:35:28,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:35:28,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:35:28,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:35:28,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:35:28,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:35:28,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:35:28,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:35:28,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:35:28,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:35:28,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:35:28,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:35:28,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:35:28,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:35:28,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:35:28,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:35:28,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:35:28,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:35:28,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:35:28,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:35:28,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:35:28,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:35:28,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:35:28,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:35:28,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:35:28,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:35:28,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:35:28,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:35:28,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:35:28,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:35:28,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:35:28,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:35:28,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:35:28,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:35:28,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:35:28,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:35:28,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:35:28,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:35:28,810 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:35:28,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:35:28,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:35:28,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:35:28,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:35:28,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:35:28,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:35:28,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:35:28,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:35:28,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:35:28,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:35:28,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:35:28,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:35:28,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:35:28,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:35:28,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:35:28,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:35:28,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:35:28,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:35:28,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:35:28,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:35:28,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:35:28,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:35:28,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:35:28,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:35:28,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:35:29,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:35:29,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:35:29,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:35:29,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:35:29,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:35:29,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i [2020-10-29 03:35:29,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dafe9b5d7/055205e3b4034911ac8900a44053fba7/FLAGf5fec8055 [2020-10-29 03:35:29,892 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:35:29,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i [2020-10-29 03:35:29,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dafe9b5d7/055205e3b4034911ac8900a44053fba7/FLAGf5fec8055 [2020-10-29 03:35:30,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dafe9b5d7/055205e3b4034911ac8900a44053fba7 [2020-10-29 03:35:30,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:35:30,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:35:30,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:35:30,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:35:30,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:35:30,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e187d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30, skipping insertion in model container [2020-10-29 03:35:30,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:35:30,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:35:30,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:35:30,569 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:35:30,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:35:30,631 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:35:30,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30 WrapperNode [2020-10-29 03:35:30,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:35:30,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:35:30,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:35:30,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:35:30,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (1/1) ... [2020-10-29 03:35:30,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:35:30,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:35:30,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:35:30,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:35:30,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:35:30,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:35:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:35:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:35:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:35:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:35:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:35:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:35:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:35:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:35:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:35:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:35:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:35:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:35:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:35:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:35:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:35:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:35:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:35:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:35:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:35:31,413 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:35:31,413 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-29 03:35:31,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:35:31 BoogieIcfgContainer [2020-10-29 03:35:31,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:35:31,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:35:31,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:35:31,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:35:31,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:35:30" (1/3) ... [2020-10-29 03:35:31,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30877003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:35:31, skipping insertion in model container [2020-10-29 03:35:31,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:35:30" (2/3) ... [2020-10-29 03:35:31,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30877003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:35:31, skipping insertion in model container [2020-10-29 03:35:31,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:35:31" (3/3) ... [2020-10-29 03:35:31,424 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-2.i [2020-10-29 03:35:31,436 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:35:31,442 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:35:31,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:35:31,486 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:35:31,486 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:35:31,486 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:35:31,486 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:35:31,486 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:35:31,487 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:35:31,487 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:35:31,487 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:35:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-29 03:35:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:35:31,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:31,515 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] [2020-10-29 03:35:31,516 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:31,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:31,523 INFO L82 PathProgramCache]: Analyzing trace with hash -706380544, now seen corresponding path program 1 times [2020-10-29 03:35:31,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:31,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211240201] [2020-10-29 03:35:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:34,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:34,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:35:34,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:35:34,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3139 [2020-10-29 03:35:34,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:34,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:34,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:35:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:35:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:35:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 03:35:34,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:34,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:34,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:34,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:35:34,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:34,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:35:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:35:34,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211240201] [2020-10-29 03:35:34,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:35:34,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:35:34,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77068953] [2020-10-29 03:35:34,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:35:34,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:35,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:35:35,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:35:35,021 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-10-29 03:35:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:35,397 INFO L93 Difference]: Finished difference Result 119 states and 183 transitions. [2020-10-29 03:35:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:35:35,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-29 03:35:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:35,407 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:35:35,408 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:35:35,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:35:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:35:35,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-29 03:35:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:35:35,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-29 03:35:35,459 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 33 [2020-10-29 03:35:35,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:35,459 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-29 03:35:35,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:35:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-29 03:35:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 03:35:35,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:35,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:35,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:35:35,462 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:35,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1631139216, now seen corresponding path program 1 times [2020-10-29 03:35:35,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:35,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7213387] [2020-10-29 03:35:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:35,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:40,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:35:40,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:35:40,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:35:40,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:40,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:35:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:35:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:40,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:40,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:40,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:40,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:40,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:40,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:35:40,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7213387] [2020-10-29 03:35:40,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:40,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:35:40,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291354502] [2020-10-29 03:35:40,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:35:40,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:40,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:35:40,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:35:40,571 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 5 states. [2020-10-29 03:35:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:40,852 INFO L93 Difference]: Finished difference Result 129 states and 156 transitions. [2020-10-29 03:35:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:35:40,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-29 03:35:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:40,854 INFO L225 Difference]: With dead ends: 129 [2020-10-29 03:35:40,854 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:35:40,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:35:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:35:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2020-10-29 03:35:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:35:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-10-29 03:35:40,868 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 51 [2020-10-29 03:35:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:40,869 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-10-29 03:35:40,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:35:40,869 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-10-29 03:35:40,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:35:40,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:40,873 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:35:40,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:35:40,874 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:40,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:40,874 INFO L82 PathProgramCache]: Analyzing trace with hash -168950530, now seen corresponding path program 2 times [2020-10-29 03:35:40,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:40,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441982667] [2020-10-29 03:35:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:41,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:41,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:45,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:35:45,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:35:45,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:45,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:35:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:35:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:35:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:45,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:45,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:45,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:35:45,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:45,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-29 03:35:45,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441982667] [2020-10-29 03:35:45,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:45,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:35:45,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49353315] [2020-10-29 03:35:45,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:35:45,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:46,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:35:46,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:35:46,002 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-10-29 03:35:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:46,355 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2020-10-29 03:35:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:35:46,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-29 03:35:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:46,358 INFO L225 Difference]: With dead ends: 163 [2020-10-29 03:35:46,358 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:35:46,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:35:46,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:35:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2020-10-29 03:35:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:35:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2020-10-29 03:35:46,383 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 69 [2020-10-29 03:35:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:46,384 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2020-10-29 03:35:46,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:35:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2020-10-29 03:35:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:35:46,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:46,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:46,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:35:46,392 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1278048268, now seen corresponding path program 3 times [2020-10-29 03:35:46,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:46,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855126337] [2020-10-29 03:35:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:46,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:47,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:51,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 03:35:51,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:35:51,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:51,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:35:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:35:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:35:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:51,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:51,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:51,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:51,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:51,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 03:35:51,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855126337] [2020-10-29 03:35:51,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:51,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:35:51,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170599703] [2020-10-29 03:35:51,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:35:51,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:51,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:35:51,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:35:51,517 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand 7 states. [2020-10-29 03:35:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:51,822 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2020-10-29 03:35:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:35:51,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-29 03:35:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:51,824 INFO L225 Difference]: With dead ends: 197 [2020-10-29 03:35:51,826 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:35:51,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:35:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:35:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2020-10-29 03:35:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:35:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-10-29 03:35:51,846 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 87 [2020-10-29 03:35:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:51,847 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-10-29 03:35:51,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:35:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-10-29 03:35:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 03:35:51,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:51,852 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:51,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:35:51,853 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:51,854 INFO L82 PathProgramCache]: Analyzing trace with hash -158858342, now seen corresponding path program 4 times [2020-10-29 03:35:51,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:51,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562350620] [2020-10-29 03:35:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:56,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:56,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 03:35:56,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:56,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 03:35:56,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:56,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:35:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:35:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:35:56,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:57,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:57,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:57,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:57,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:57,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:57,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:57,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 03:35:57,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562350620] [2020-10-29 03:35:57,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:57,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:35:57,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988113694] [2020-10-29 03:35:57,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:35:57,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:57,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:35:57,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:57,079 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 8 states. [2020-10-29 03:35:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:57,511 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2020-10-29 03:35:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:35:57,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-29 03:35:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:57,513 INFO L225 Difference]: With dead ends: 231 [2020-10-29 03:35:57,513 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:35:57,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:35:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2020-10-29 03:35:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 03:35:57,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2020-10-29 03:35:57,526 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 105 [2020-10-29 03:35:57,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:57,527 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2020-10-29 03:35:57,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:35:57,527 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2020-10-29 03:35:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 03:35:57,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:57,529 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:57,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:35:57,529 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:57,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:57,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1460176808, now seen corresponding path program 5 times [2020-10-29 03:35:57,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:57,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868116358] [2020-10-29 03:35:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:57,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 03:36:02,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:36:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:36:02,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:36:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 03:36:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:36:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:02,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:02,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:02,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:02,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-29 03:36:02,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868116358] [2020-10-29 03:36:02,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:02,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:36:02,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752299657] [2020-10-29 03:36:02,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:36:02,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:02,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:36:02,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:36:02,711 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand 9 states. [2020-10-29 03:36:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:03,328 INFO L93 Difference]: Finished difference Result 265 states and 292 transitions. [2020-10-29 03:36:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:36:03,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-10-29 03:36:03,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:03,331 INFO L225 Difference]: With dead ends: 265 [2020-10-29 03:36:03,331 INFO L226 Difference]: Without dead ends: 156 [2020-10-29 03:36:03,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:36:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-29 03:36:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2020-10-29 03:36:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 03:36:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2020-10-29 03:36:03,345 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 123 [2020-10-29 03:36:03,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:03,345 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2020-10-29 03:36:03,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:36:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2020-10-29 03:36:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 03:36:03,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:03,349 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:03,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:36:03,350 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:03,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:03,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1430133706, now seen corresponding path program 6 times [2020-10-29 03:36:03,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:03,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788653632] [2020-10-29 03:36:03,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:03,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:03,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 03:36:08,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:36:08,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:36:08,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:36:08,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 03:36:08,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:36:08,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:36:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:08,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-29 03:36:08,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788653632] [2020-10-29 03:36:08,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:08,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:36:08,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363940139] [2020-10-29 03:36:08,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:36:08,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:08,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:36:08,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:36:08,525 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 10 states. [2020-10-29 03:36:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:09,006 INFO L93 Difference]: Finished difference Result 299 states and 326 transitions. [2020-10-29 03:36:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:36:09,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-10-29 03:36:09,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:09,008 INFO L225 Difference]: With dead ends: 299 [2020-10-29 03:36:09,008 INFO L226 Difference]: Without dead ends: 174 [2020-10-29 03:36:09,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:36:09,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-29 03:36:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 165. [2020-10-29 03:36:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 03:36:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-10-29 03:36:09,031 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 141 [2020-10-29 03:36:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:09,032 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-10-29 03:36:09,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:36:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-10-29 03:36:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 03:36:09,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:09,039 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:09,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:36:09,039 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:09,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1473182020, now seen corresponding path program 7 times [2020-10-29 03:36:09,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:09,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963097293] [2020-10-29 03:36:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:09,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:14,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 03:36:14,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-29 03:36:14,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:14,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:36:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 03:36:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:36:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:14,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:14,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:14,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:14,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:14,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:14,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:14,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:14,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:14,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:36:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-29 03:36:14,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963097293] [2020-10-29 03:36:14,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:14,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:36:14,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450607435] [2020-10-29 03:36:14,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:36:14,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:14,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:36:14,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:36:14,346 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 11 states. [2020-10-29 03:36:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:14,917 INFO L93 Difference]: Finished difference Result 333 states and 360 transitions. [2020-10-29 03:36:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:36:14,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2020-10-29 03:36:14,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:14,920 INFO L225 Difference]: With dead ends: 333 [2020-10-29 03:36:14,921 INFO L226 Difference]: Without dead ends: 192 [2020-10-29 03:36:14,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:36:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-29 03:36:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 183. [2020-10-29 03:36:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-29 03:36:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2020-10-29 03:36:14,931 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 159 [2020-10-29 03:36:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:14,931 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 193 transitions. [2020-10-29 03:36:14,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:36:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 193 transitions. [2020-10-29 03:36:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-29 03:36:14,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:14,934 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:14,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:36:14,934 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:14,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1152211246, now seen corresponding path program 8 times [2020-10-29 03:36:14,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:14,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969973540] [2020-10-29 03:36:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:19,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:19,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 03:36:19,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 03:36:20,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:20,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:36:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 03:36:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:36:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:20,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:20,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:20,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:20,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:20,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-10-29 03:36:20,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969973540] [2020-10-29 03:36:20,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:20,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:36:20,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675109491] [2020-10-29 03:36:20,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:36:20,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:20,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:36:20,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:36:20,165 INFO L87 Difference]: Start difference. First operand 183 states and 193 transitions. Second operand 12 states. [2020-10-29 03:36:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:20,840 INFO L93 Difference]: Finished difference Result 367 states and 394 transitions. [2020-10-29 03:36:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:36:20,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 177 [2020-10-29 03:36:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:20,843 INFO L225 Difference]: With dead ends: 367 [2020-10-29 03:36:20,843 INFO L226 Difference]: Without dead ends: 210 [2020-10-29 03:36:20,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:36:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-29 03:36:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 201. [2020-10-29 03:36:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 03:36:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 211 transitions. [2020-10-29 03:36:20,859 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 211 transitions. Word has length 177 [2020-10-29 03:36:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:20,859 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 211 transitions. [2020-10-29 03:36:20,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:36:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 211 transitions. [2020-10-29 03:36:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-29 03:36:20,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:20,861 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:20,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:36:20,862 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:20,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2004339936, now seen corresponding path program 9 times [2020-10-29 03:36:20,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:20,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276100436] [2020-10-29 03:36:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:25,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:25,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 03:36:25,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:36:25,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:25,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:36:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:36:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:36:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:26,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:26,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:26,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:26,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:26,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:26,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-29 03:36:26,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276100436] [2020-10-29 03:36:26,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:26,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:36:26,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277422317] [2020-10-29 03:36:26,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:36:26,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:36:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:36:26,075 INFO L87 Difference]: Start difference. First operand 201 states and 211 transitions. Second operand 13 states. [2020-10-29 03:36:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:26,744 INFO L93 Difference]: Finished difference Result 401 states and 428 transitions. [2020-10-29 03:36:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:36:26,745 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2020-10-29 03:36:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:26,747 INFO L225 Difference]: With dead ends: 401 [2020-10-29 03:36:26,747 INFO L226 Difference]: Without dead ends: 228 [2020-10-29 03:36:26,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:36:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-29 03:36:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 219. [2020-10-29 03:36:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 03:36:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 229 transitions. [2020-10-29 03:36:26,757 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 229 transitions. Word has length 195 [2020-10-29 03:36:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:26,758 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 229 transitions. [2020-10-29 03:36:26,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:36:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 229 transitions. [2020-10-29 03:36:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 03:36:26,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:26,761 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:26,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:36:26,769 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:26,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:26,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1097943918, now seen corresponding path program 10 times [2020-10-29 03:36:26,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:26,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690295910] [2020-10-29 03:36:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:31,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-29 03:36:31,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5203 [2020-10-29 03:36:31,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:31,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:36:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 03:36:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:36:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:36:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:32,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:32,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-10-29 03:36:32,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690295910] [2020-10-29 03:36:32,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:32,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:36:32,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285990086] [2020-10-29 03:36:32,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:36:32,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:32,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:36:32,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:36:32,228 INFO L87 Difference]: Start difference. First operand 219 states and 229 transitions. Second operand 14 states. [2020-10-29 03:36:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:33,037 INFO L93 Difference]: Finished difference Result 435 states and 462 transitions. [2020-10-29 03:36:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:36:33,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2020-10-29 03:36:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:33,040 INFO L225 Difference]: With dead ends: 435 [2020-10-29 03:36:33,041 INFO L226 Difference]: Without dead ends: 246 [2020-10-29 03:36:33,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:36:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-29 03:36:33,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 237. [2020-10-29 03:36:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-29 03:36:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 247 transitions. [2020-10-29 03:36:33,053 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 247 transitions. Word has length 213 [2020-10-29 03:36:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:33,054 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 247 transitions. [2020-10-29 03:36:33,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:36:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 247 transitions. [2020-10-29 03:36:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 03:36:33,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:33,057 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:33,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:36:33,057 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:33,058 INFO L82 PathProgramCache]: Analyzing trace with hash 796525180, now seen corresponding path program 11 times [2020-10-29 03:36:33,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:33,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359144125] [2020-10-29 03:36:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:38,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 03:36:38,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-29 03:36:38,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:38,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:36:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:36:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:36:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:38,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:38,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:38,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:38,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:38,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:38,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-10-29 03:36:38,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359144125] [2020-10-29 03:36:38,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:38,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:36:38,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197056890] [2020-10-29 03:36:38,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:36:38,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:38,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:36:38,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:36:38,459 INFO L87 Difference]: Start difference. First operand 237 states and 247 transitions. Second operand 15 states. [2020-10-29 03:36:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:39,242 INFO L93 Difference]: Finished difference Result 469 states and 496 transitions. [2020-10-29 03:36:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:36:39,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 231 [2020-10-29 03:36:39,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:39,245 INFO L225 Difference]: With dead ends: 469 [2020-10-29 03:36:39,245 INFO L226 Difference]: Without dead ends: 264 [2020-10-29 03:36:39,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:36:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-29 03:36:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2020-10-29 03:36:39,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-29 03:36:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 265 transitions. [2020-10-29 03:36:39,259 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 265 transitions. Word has length 231 [2020-10-29 03:36:39,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:39,259 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 265 transitions. [2020-10-29 03:36:39,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:36:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 265 transitions. [2020-10-29 03:36:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 03:36:39,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:39,263 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:39,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:36:39,263 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:39,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:39,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2032872950, now seen corresponding path program 12 times [2020-10-29 03:36:39,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:39,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478406962] [2020-10-29 03:36:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:44,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:44,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 03:36:44,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:44,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-29 03:36:44,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:44,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:36:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 03:36:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:36:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:44,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:44,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:44,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:44,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:44,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:44,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:44,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-29 03:36:44,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478406962] [2020-10-29 03:36:44,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:44,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:36:44,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005971884] [2020-10-29 03:36:44,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:36:44,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:44,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:36:44,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:36:44,695 INFO L87 Difference]: Start difference. First operand 255 states and 265 transitions. Second operand 16 states. [2020-10-29 03:36:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:45,610 INFO L93 Difference]: Finished difference Result 503 states and 530 transitions. [2020-10-29 03:36:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:36:45,610 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 249 [2020-10-29 03:36:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:45,613 INFO L225 Difference]: With dead ends: 503 [2020-10-29 03:36:45,614 INFO L226 Difference]: Without dead ends: 282 [2020-10-29 03:36:45,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:36:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-29 03:36:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 273. [2020-10-29 03:36:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-29 03:36:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 283 transitions. [2020-10-29 03:36:45,630 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 283 transitions. Word has length 249 [2020-10-29 03:36:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:45,630 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 283 transitions. [2020-10-29 03:36:45,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:36:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 283 transitions. [2020-10-29 03:36:45,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 03:36:45,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:45,632 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:45,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:36:45,633 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:45,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:45,633 INFO L82 PathProgramCache]: Analyzing trace with hash 164403736, now seen corresponding path program 13 times [2020-10-29 03:36:45,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:45,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756889373] [2020-10-29 03:36:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:50,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:50,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 03:36:50,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-29 03:36:50,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:50,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:36:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:36:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:36:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:51,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:51,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:51,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:51,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:51,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:51,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:51,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:51,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:51,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:51,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-10-29 03:36:51,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756889373] [2020-10-29 03:36:51,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:51,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:36:51,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301992299] [2020-10-29 03:36:51,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:36:51,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:51,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:36:51,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:36:51,064 INFO L87 Difference]: Start difference. First operand 273 states and 283 transitions. Second operand 17 states. [2020-10-29 03:36:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:52,020 INFO L93 Difference]: Finished difference Result 537 states and 564 transitions. [2020-10-29 03:36:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:36:52,020 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 267 [2020-10-29 03:36:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:52,023 INFO L225 Difference]: With dead ends: 537 [2020-10-29 03:36:52,023 INFO L226 Difference]: Without dead ends: 300 [2020-10-29 03:36:52,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:36:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-29 03:36:52,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 291. [2020-10-29 03:36:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-29 03:36:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 301 transitions. [2020-10-29 03:36:52,039 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 301 transitions. Word has length 267 [2020-10-29 03:36:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:52,039 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 301 transitions. [2020-10-29 03:36:52,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:36:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 301 transitions. [2020-10-29 03:36:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-29 03:36:52,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:52,042 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:52,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:36:52,042 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash -978044250, now seen corresponding path program 14 times [2020-10-29 03:36:52,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:52,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093396084] [2020-10-29 03:36:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:57,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-29 03:36:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-29 03:36:57,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:57,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:36:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 03:36:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:36:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:57,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:57,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:57,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:57,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:57,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:57,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:57,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:57,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-10-29 03:36:57,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093396084] [2020-10-29 03:36:57,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:57,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:36:57,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007248187] [2020-10-29 03:36:57,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:36:57,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:57,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:36:57,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:57,486 INFO L87 Difference]: Start difference. First operand 291 states and 301 transitions. Second operand 18 states. [2020-10-29 03:36:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:58,485 INFO L93 Difference]: Finished difference Result 571 states and 598 transitions. [2020-10-29 03:36:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:36:58,485 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 285 [2020-10-29 03:36:58,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:58,488 INFO L225 Difference]: With dead ends: 571 [2020-10-29 03:36:58,488 INFO L226 Difference]: Without dead ends: 318 [2020-10-29 03:36:58,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-29 03:36:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 309. [2020-10-29 03:36:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-29 03:36:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 319 transitions. [2020-10-29 03:36:58,505 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 319 transitions. Word has length 285 [2020-10-29 03:36:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:58,505 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 319 transitions. [2020-10-29 03:36:58,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:36:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 319 transitions. [2020-10-29 03:36:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 03:36:58,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:58,507 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:58,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:36:58,508 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:58,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1625723828, now seen corresponding path program 15 times [2020-10-29 03:36:58,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:58,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335955355] [2020-10-29 03:36:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:58,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:03,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5216 [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:37:03,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-10-29 03:37:04,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335955355] [2020-10-29 03:37:04,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:04,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:37:04,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422823155] [2020-10-29 03:37:04,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:37:04,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:04,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:37:04,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:37:04,077 INFO L87 Difference]: Start difference. First operand 309 states and 319 transitions. Second operand 19 states. [2020-10-29 03:37:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:05,082 INFO L93 Difference]: Finished difference Result 605 states and 632 transitions. [2020-10-29 03:37:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:37:05,083 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 303 [2020-10-29 03:37:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:05,085 INFO L225 Difference]: With dead ends: 605 [2020-10-29 03:37:05,085 INFO L226 Difference]: Without dead ends: 336 [2020-10-29 03:37:05,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:37:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-29 03:37:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 327. [2020-10-29 03:37:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-29 03:37:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 337 transitions. [2020-10-29 03:37:05,100 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 337 transitions. Word has length 303 [2020-10-29 03:37:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:05,100 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 337 transitions. [2020-10-29 03:37:05,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:37:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 337 transitions. [2020-10-29 03:37:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 03:37:05,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:05,103 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:05,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:37:05,103 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:05,104 INFO L82 PathProgramCache]: Analyzing trace with hash -389642942, now seen corresponding path program 16 times [2020-10-29 03:37:05,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:05,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503281361] [2020-10-29 03:37:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:10,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:10,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 03:37:10,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-29 03:37:10,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:10,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:37:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-29 03:37:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:37:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:10,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-10-29 03:37:10,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503281361] [2020-10-29 03:37:10,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:10,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:37:10,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132802690] [2020-10-29 03:37:10,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:37:10,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:10,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:37:10,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:37:10,572 INFO L87 Difference]: Start difference. First operand 327 states and 337 transitions. Second operand 20 states. [2020-10-29 03:37:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:11,656 INFO L93 Difference]: Finished difference Result 639 states and 666 transitions. [2020-10-29 03:37:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:37:11,657 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 321 [2020-10-29 03:37:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:11,659 INFO L225 Difference]: With dead ends: 639 [2020-10-29 03:37:11,659 INFO L226 Difference]: Without dead ends: 354 [2020-10-29 03:37:11,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:37:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-29 03:37:11,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 345. [2020-10-29 03:37:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-29 03:37:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 355 transitions. [2020-10-29 03:37:11,680 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 355 transitions. Word has length 321 [2020-10-29 03:37:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:11,680 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 355 transitions. [2020-10-29 03:37:11,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:37:11,680 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 355 transitions. [2020-10-29 03:37:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 03:37:11,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:11,684 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:11,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:37:11,684 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:11,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:11,685 INFO L82 PathProgramCache]: Analyzing trace with hash 532606800, now seen corresponding path program 17 times [2020-10-29 03:37:11,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:11,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351917379] [2020-10-29 03:37:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:11,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:17,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:17,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 03:37:17,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:17,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5957 [2020-10-29 03:37:17,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:17,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:37:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:37:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:18,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:18,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:18,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-10-29 03:37:18,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351917379] [2020-10-29 03:37:18,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:18,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:37:18,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517614364] [2020-10-29 03:37:18,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:37:18,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:18,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:37:18,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:37:18,061 INFO L87 Difference]: Start difference. First operand 345 states and 355 transitions. Second operand 21 states. [2020-10-29 03:37:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:19,145 INFO L93 Difference]: Finished difference Result 673 states and 700 transitions. [2020-10-29 03:37:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:37:19,145 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 339 [2020-10-29 03:37:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:19,148 INFO L225 Difference]: With dead ends: 673 [2020-10-29 03:37:19,148 INFO L226 Difference]: Without dead ends: 372 [2020-10-29 03:37:19,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:37:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-29 03:37:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2020-10-29 03:37:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-29 03:37:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 373 transitions. [2020-10-29 03:37:19,165 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 373 transitions. Word has length 339 [2020-10-29 03:37:19,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:19,166 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 373 transitions. [2020-10-29 03:37:19,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:37:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 373 transitions. [2020-10-29 03:37:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-29 03:37:19,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:19,169 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:19,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:37:19,169 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1262662110, now seen corresponding path program 18 times [2020-10-29 03:37:19,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:19,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506882519] [2020-10-29 03:37:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:24,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5307 [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:37:24,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:24,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:24,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:24,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:24,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:37:24,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:24,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:24,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-10-29 03:37:24,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506882519] [2020-10-29 03:37:24,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:24,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:37:24,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414766129] [2020-10-29 03:37:24,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:37:24,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:24,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:37:24,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:37:24,960 INFO L87 Difference]: Start difference. First operand 363 states and 373 transitions. Second operand 22 states. [2020-10-29 03:37:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:26,173 INFO L93 Difference]: Finished difference Result 707 states and 734 transitions. [2020-10-29 03:37:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:37:26,173 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 357 [2020-10-29 03:37:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:26,176 INFO L225 Difference]: With dead ends: 707 [2020-10-29 03:37:26,176 INFO L226 Difference]: Without dead ends: 390 [2020-10-29 03:37:26,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:37:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-29 03:37:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 381. [2020-10-29 03:37:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-29 03:37:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 391 transitions. [2020-10-29 03:37:26,191 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 391 transitions. Word has length 357 [2020-10-29 03:37:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:26,191 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 391 transitions. [2020-10-29 03:37:26,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:37:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 391 transitions. [2020-10-29 03:37:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-29 03:37:26,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:26,194 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:26,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:37:26,195 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:26,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:26,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2117292820, now seen corresponding path program 19 times [2020-10-29 03:37:26,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:26,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470964711] [2020-10-29 03:37:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:26,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:31,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-29 03:37:31,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5688 [2020-10-29 03:37:31,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:31,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:37:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:37:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:32,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:32,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:32,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:32,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:32,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:37:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-10-29 03:37:32,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470964711] [2020-10-29 03:37:32,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:32,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:37:32,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707836688] [2020-10-29 03:37:32,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:37:32,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:32,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:37:32,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:37:32,562 INFO L87 Difference]: Start difference. First operand 381 states and 391 transitions. Second operand 23 states. [2020-10-29 03:37:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:33,825 INFO L93 Difference]: Finished difference Result 741 states and 768 transitions. [2020-10-29 03:37:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:37:33,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 375 [2020-10-29 03:37:33,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:33,828 INFO L225 Difference]: With dead ends: 741 [2020-10-29 03:37:33,829 INFO L226 Difference]: Without dead ends: 408 [2020-10-29 03:37:33,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:37:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-29 03:37:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 399. [2020-10-29 03:37:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-29 03:37:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 409 transitions. [2020-10-29 03:37:33,847 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 409 transitions. Word has length 375 [2020-10-29 03:37:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:33,847 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 409 transitions. [2020-10-29 03:37:33,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:37:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 409 transitions. [2020-10-29 03:37:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 03:37:33,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:33,851 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:33,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:37:33,851 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:33,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:33,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2027929722, now seen corresponding path program 20 times [2020-10-29 03:37:33,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:33,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731972173] [2020-10-29 03:37:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:33,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:34,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:39,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-29 03:37:39,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5746 [2020-10-29 03:37:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:39,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:37:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-29 03:37:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:37:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:40,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:40,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:40,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:37:40,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:40,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:40,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:37:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-10-29 03:37:40,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731972173] [2020-10-29 03:37:40,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:40,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:37:40,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568066439] [2020-10-29 03:37:40,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:37:40,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:40,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:37:40,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:37:40,331 INFO L87 Difference]: Start difference. First operand 399 states and 409 transitions. Second operand 24 states. [2020-10-29 03:37:41,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:41,680 INFO L93 Difference]: Finished difference Result 775 states and 802 transitions. [2020-10-29 03:37:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:37:41,680 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 393 [2020-10-29 03:37:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:41,684 INFO L225 Difference]: With dead ends: 775 [2020-10-29 03:37:41,684 INFO L226 Difference]: Without dead ends: 426 [2020-10-29 03:37:41,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:37:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-29 03:37:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 417. [2020-10-29 03:37:41,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-29 03:37:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 427 transitions. [2020-10-29 03:37:41,701 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 427 transitions. Word has length 393 [2020-10-29 03:37:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:41,701 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 427 transitions. [2020-10-29 03:37:41,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:37:41,701 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 427 transitions. [2020-10-29 03:37:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-29 03:37:41,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:41,704 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:41,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:37:41,705 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:41,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:41,705 INFO L82 PathProgramCache]: Analyzing trace with hash -754529144, now seen corresponding path program 21 times [2020-10-29 03:37:41,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:41,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792512917] [2020-10-29 03:37:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:47,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-29 03:37:47,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5814 [2020-10-29 03:37:47,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:47,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:37:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:37:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:37:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:48,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:48,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:48,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:48,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:48,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:48,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-10-29 03:37:48,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792512917] [2020-10-29 03:37:48,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:48,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:37:48,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106388100] [2020-10-29 03:37:48,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:37:48,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:48,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:37:48,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:37:48,170 INFO L87 Difference]: Start difference. First operand 417 states and 427 transitions. Second operand 25 states. [2020-10-29 03:37:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:49,572 INFO L93 Difference]: Finished difference Result 809 states and 836 transitions. [2020-10-29 03:37:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:37:49,576 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 411 [2020-10-29 03:37:49,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:49,578 INFO L225 Difference]: With dead ends: 809 [2020-10-29 03:37:49,579 INFO L226 Difference]: Without dead ends: 444 [2020-10-29 03:37:49,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:37:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-29 03:37:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 435. [2020-10-29 03:37:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-29 03:37:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 445 transitions. [2020-10-29 03:37:49,597 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 445 transitions. Word has length 411 [2020-10-29 03:37:49,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:49,597 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 445 transitions. [2020-10-29 03:37:49,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:37:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 445 transitions. [2020-10-29 03:37:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-29 03:37:49,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:49,601 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:49,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:37:49,601 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash -304828138, now seen corresponding path program 22 times [2020-10-29 03:37:49,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:49,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675727172] [2020-10-29 03:37:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:49,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:54,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5351 [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:37:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-10-29 03:37:55,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675727172] [2020-10-29 03:37:55,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:55,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:37:55,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966128166] [2020-10-29 03:37:55,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:37:55,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:55,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:37:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:37:55,625 INFO L87 Difference]: Start difference. First operand 435 states and 445 transitions. Second operand 26 states. [2020-10-29 03:37:57,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:57,086 INFO L93 Difference]: Finished difference Result 843 states and 870 transitions. [2020-10-29 03:37:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:37:57,087 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 429 [2020-10-29 03:37:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:57,090 INFO L225 Difference]: With dead ends: 843 [2020-10-29 03:37:57,090 INFO L226 Difference]: Without dead ends: 462 [2020-10-29 03:37:57,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:37:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-29 03:37:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 453. [2020-10-29 03:37:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-29 03:37:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 463 transitions. [2020-10-29 03:37:57,106 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 463 transitions. Word has length 429 [2020-10-29 03:37:57,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:57,107 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 463 transitions. [2020-10-29 03:37:57,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:37:57,107 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 463 transitions. [2020-10-29 03:37:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-29 03:37:57,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:57,111 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:57,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:37:57,111 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:57,111 INFO L82 PathProgramCache]: Analyzing trace with hash 803491364, now seen corresponding path program 23 times [2020-10-29 03:37:57,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:57,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615095731] [2020-10-29 03:37:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:02,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:02,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-29 03:38:02,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:38:02,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:02,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:38:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 03:38:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:38:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:02,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:02,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:02,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:02,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:02,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:02,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-10-29 03:38:02,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615095731] [2020-10-29 03:38:02,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:02,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:38:02,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844172400] [2020-10-29 03:38:02,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:38:02,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:02,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:38:02,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:38:02,814 INFO L87 Difference]: Start difference. First operand 453 states and 463 transitions. Second operand 27 states. [2020-10-29 03:38:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:04,433 INFO L93 Difference]: Finished difference Result 877 states and 904 transitions. [2020-10-29 03:38:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:38:04,434 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 447 [2020-10-29 03:38:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:04,438 INFO L225 Difference]: With dead ends: 877 [2020-10-29 03:38:04,438 INFO L226 Difference]: Without dead ends: 480 [2020-10-29 03:38:04,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:38:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-29 03:38:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 471. [2020-10-29 03:38:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-29 03:38:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 481 transitions. [2020-10-29 03:38:04,452 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 481 transitions. Word has length 447 [2020-10-29 03:38:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:04,453 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 481 transitions. [2020-10-29 03:38:04,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:38:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 481 transitions. [2020-10-29 03:38:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-29 03:38:04,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:04,456 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:04,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:38:04,457 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:04,457 INFO L82 PathProgramCache]: Analyzing trace with hash -690453582, now seen corresponding path program 24 times [2020-10-29 03:38:04,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:04,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692540981] [2020-10-29 03:38:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:04,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:04,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:09,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-29 03:38:09,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:09,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-29 03:38:09,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:09,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:38:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 03:38:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:38:09,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:10,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:10,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:10,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:10,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:10,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:10,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-10-29 03:38:10,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692540981] [2020-10-29 03:38:10,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:10,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:38:10,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711784720] [2020-10-29 03:38:10,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:38:10,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:10,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:38:10,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:38:10,384 INFO L87 Difference]: Start difference. First operand 471 states and 481 transitions. Second operand 28 states. [2020-10-29 03:38:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:12,003 INFO L93 Difference]: Finished difference Result 911 states and 938 transitions. [2020-10-29 03:38:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:38:12,003 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 465 [2020-10-29 03:38:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:12,007 INFO L225 Difference]: With dead ends: 911 [2020-10-29 03:38:12,007 INFO L226 Difference]: Without dead ends: 498 [2020-10-29 03:38:12,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:38:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-29 03:38:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 489. [2020-10-29 03:38:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-29 03:38:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 499 transitions. [2020-10-29 03:38:12,022 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 499 transitions. Word has length 465 [2020-10-29 03:38:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:12,022 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 499 transitions. [2020-10-29 03:38:12,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:38:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 499 transitions. [2020-10-29 03:38:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-29 03:38:12,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:12,026 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:12,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:38:12,026 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:12,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1163669952, now seen corresponding path program 25 times [2020-10-29 03:38:12,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:12,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29421347] [2020-10-29 03:38:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:18,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:18,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-29 03:38:18,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6105 [2020-10-29 03:38:18,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:18,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:38:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-29 03:38:18,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:38:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:18,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:18,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:18,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:18,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-10-29 03:38:19,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29421347] [2020-10-29 03:38:19,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:19,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:38:19,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077639815] [2020-10-29 03:38:19,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:38:19,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:19,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:38:19,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:38:19,072 INFO L87 Difference]: Start difference. First operand 489 states and 499 transitions. Second operand 29 states. [2020-10-29 03:38:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:20,655 INFO L93 Difference]: Finished difference Result 945 states and 972 transitions. [2020-10-29 03:38:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:38:20,656 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 483 [2020-10-29 03:38:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:20,659 INFO L225 Difference]: With dead ends: 945 [2020-10-29 03:38:20,659 INFO L226 Difference]: Without dead ends: 516 [2020-10-29 03:38:20,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:38:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-29 03:38:20,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 507. [2020-10-29 03:38:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-29 03:38:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 517 transitions. [2020-10-29 03:38:20,675 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 517 transitions. Word has length 483 [2020-10-29 03:38:20,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:20,675 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 517 transitions. [2020-10-29 03:38:20,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:38:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 517 transitions. [2020-10-29 03:38:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-29 03:38:20,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:20,680 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:20,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:38:20,680 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:20,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:20,680 INFO L82 PathProgramCache]: Analyzing trace with hash -786286514, now seen corresponding path program 26 times [2020-10-29 03:38:20,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:20,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047288677] [2020-10-29 03:38:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:26,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5699 [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:38:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:27,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:27,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:27,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-10-29 03:38:27,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047288677] [2020-10-29 03:38:27,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:27,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:38:27,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101715625] [2020-10-29 03:38:27,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:38:27,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:27,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:38:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:38:27,312 INFO L87 Difference]: Start difference. First operand 507 states and 517 transitions. Second operand 30 states. [2020-10-29 03:38:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:29,280 INFO L93 Difference]: Finished difference Result 979 states and 1006 transitions. [2020-10-29 03:38:29,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:38:29,280 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 501 [2020-10-29 03:38:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:29,283 INFO L225 Difference]: With dead ends: 979 [2020-10-29 03:38:29,283 INFO L226 Difference]: Without dead ends: 534 [2020-10-29 03:38:29,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:38:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-10-29 03:38:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 525. [2020-10-29 03:38:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-10-29 03:38:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 535 transitions. [2020-10-29 03:38:29,300 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 535 transitions. Word has length 501 [2020-10-29 03:38:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:29,300 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 535 transitions. [2020-10-29 03:38:29,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:38:29,300 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 535 transitions. [2020-10-29 03:38:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-10-29 03:38:29,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:29,305 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:29,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:38:29,305 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:29,306 INFO L82 PathProgramCache]: Analyzing trace with hash 283473756, now seen corresponding path program 27 times [2020-10-29 03:38:29,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:29,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093183255] [2020-10-29 03:38:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:42,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:42,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-29 03:38:42,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13308 [2020-10-29 03:38:42,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:42,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:38:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-10-29 03:38:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:38:42,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:43,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:43,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:43,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:43,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:43,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:43,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:43,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:43,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:43,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:43,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-10-29 03:38:43,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093183255] [2020-10-29 03:38:43,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:43,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:38:43,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078763930] [2020-10-29 03:38:43,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:38:43,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:43,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:38:43,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:38:43,544 INFO L87 Difference]: Start difference. First operand 525 states and 535 transitions. Second operand 31 states. [2020-10-29 03:38:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:45,420 INFO L93 Difference]: Finished difference Result 1013 states and 1040 transitions. [2020-10-29 03:38:45,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:38:45,421 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 519 [2020-10-29 03:38:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:45,425 INFO L225 Difference]: With dead ends: 1013 [2020-10-29 03:38:45,425 INFO L226 Difference]: Without dead ends: 552 [2020-10-29 03:38:45,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:38:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-29 03:38:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 543. [2020-10-29 03:38:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-29 03:38:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 553 transitions. [2020-10-29 03:38:45,442 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 553 transitions. Word has length 519 [2020-10-29 03:38:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:45,443 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 553 transitions. [2020-10-29 03:38:45,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:38:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 553 transitions. [2020-10-29 03:38:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-29 03:38:45,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:45,447 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:45,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:38:45,448 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1435971862, now seen corresponding path program 28 times [2020-10-29 03:38:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:45,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430571582] [2020-10-29 03:38:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:45,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5940 [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:38:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:38:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:52,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:52,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:52,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:52,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-10-29 03:38:52,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430571582] [2020-10-29 03:38:52,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:52,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:38:52,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257601053] [2020-10-29 03:38:52,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:38:52,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:52,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:38:52,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:38:52,290 INFO L87 Difference]: Start difference. First operand 543 states and 553 transitions. Second operand 32 states. [2020-10-29 03:38:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:54,133 INFO L93 Difference]: Finished difference Result 1047 states and 1074 transitions. [2020-10-29 03:38:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:38:54,134 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 537 [2020-10-29 03:38:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:54,137 INFO L225 Difference]: With dead ends: 1047 [2020-10-29 03:38:54,137 INFO L226 Difference]: Without dead ends: 570 [2020-10-29 03:38:54,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:38:54,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-10-29 03:38:54,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 561. [2020-10-29 03:38:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-29 03:38:54,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 571 transitions. [2020-10-29 03:38:54,155 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 571 transitions. Word has length 537 [2020-10-29 03:38:54,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:54,155 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 571 transitions. [2020-10-29 03:38:54,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:38:54,155 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 571 transitions. [2020-10-29 03:38:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-29 03:38:54,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:54,160 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:54,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:38:54,160 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:54,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1602806024, now seen corresponding path program 29 times [2020-10-29 03:38:54,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:54,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52465375] [2020-10-29 03:38:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:07,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:07,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-29 03:39:07,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:39:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13347 [2020-10-29 03:39:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:07,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:39:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-29 03:39:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:39:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:08,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-10-29 03:39:08,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52465375] [2020-10-29 03:39:08,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:08,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:39:08,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750951270] [2020-10-29 03:39:08,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:39:08,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:08,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:39:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:39:08,560 INFO L87 Difference]: Start difference. First operand 561 states and 571 transitions. Second operand 33 states. [2020-10-29 03:39:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:10,393 INFO L93 Difference]: Finished difference Result 1081 states and 1108 transitions. [2020-10-29 03:39:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:39:10,394 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 555 [2020-10-29 03:39:10,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:10,397 INFO L225 Difference]: With dead ends: 1081 [2020-10-29 03:39:10,397 INFO L226 Difference]: Without dead ends: 588 [2020-10-29 03:39:10,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:39:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-29 03:39:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 579. [2020-10-29 03:39:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-29 03:39:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 589 transitions. [2020-10-29 03:39:10,415 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 589 transitions. Word has length 555 [2020-10-29 03:39:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:10,416 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 589 transitions. [2020-10-29 03:39:10,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:39:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 589 transitions. [2020-10-29 03:39:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-29 03:39:10,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:10,421 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:10,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:39:10,421 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:10,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:10,422 INFO L82 PathProgramCache]: Analyzing trace with hash 551765894, now seen corresponding path program 30 times [2020-10-29 03:39:10,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:10,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048155633] [2020-10-29 03:39:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking...