/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_init5_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:41:51,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:41:51,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:41:51,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:41:51,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:41:51,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:41:51,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:41:51,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:41:51,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:41:51,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:41:51,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:41:51,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:41:51,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:41:51,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:41:51,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:41:51,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:41:51,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:41:51,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:41:51,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:41:51,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:41:51,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:41:51,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:41:51,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:41:51,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:41:51,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:41:51,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:41:51,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:41:51,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:41:51,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:41:51,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:41:51,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:41:51,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:41:51,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:41:51,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:41:51,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:41:51,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:41:51,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:41:51,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:41:51,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:41:51,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:41:51,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:41:51,669 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 03:41:51,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:41:51,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:41:51,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:41:51,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:41:51,729 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:41:51,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:41:51,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:41:51,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:41:51,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:41:51,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:41:51,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:41:51,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:41:51,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:41:51,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:41:51,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:41:51,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:41:51,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:41:51,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:41:51,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:41:51,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:41:51,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:41:51,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:41:51,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:41:51,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:41:51,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:41:51,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:41:51,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:41:51,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:41:51,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:41:51,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:41:52,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:41:52,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:41:52,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:41:52,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:41:52,160 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:41:52,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init5_ground-1.i [2020-10-29 03:41:52,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9447d50/eab5b18c7d904985bab1eff154ec4610/FLAGee3ff7492 [2020-10-29 03:41:52,918 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:41:52,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init5_ground-1.i [2020-10-29 03:41:52,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9447d50/eab5b18c7d904985bab1eff154ec4610/FLAGee3ff7492 [2020-10-29 03:41:53,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9447d50/eab5b18c7d904985bab1eff154ec4610 [2020-10-29 03:41:53,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:41:53,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:41:53,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:41:53,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:41:53,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:41:53,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d1f84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53, skipping insertion in model container [2020-10-29 03:41:53,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:41:53,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:41:53,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:41:53,517 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:41:53,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:41:53,565 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:41:53,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53 WrapperNode [2020-10-29 03:41:53,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:41:53,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:41:53,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:41:53,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:41:53,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (1/1) ... [2020-10-29 03:41:53,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:41:53,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:41:53,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:41:53,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:41:53,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (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 03:41:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:41:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:41:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:41:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:41:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:41:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:41:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:41:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:41:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:41:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:41:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:41:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:41:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:41:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:41:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:41:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:41:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:41:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:41:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:41:54,077 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:41:54,077 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 03:41:54,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:41:54 BoogieIcfgContainer [2020-10-29 03:41:54,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:41:54,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:41:54,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:41:54,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:41:54,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:41:53" (1/3) ... [2020-10-29 03:41:54,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed5b26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:41:54, skipping insertion in model container [2020-10-29 03:41:54,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:41:53" (2/3) ... [2020-10-29 03:41:54,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed5b26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:41:54, skipping insertion in model container [2020-10-29 03:41:54,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:41:54" (3/3) ... [2020-10-29 03:41:54,089 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init5_ground-1.i [2020-10-29 03:41:54,103 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:41:54,112 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:41:54,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:41:54,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:41:54,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:41:54,190 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:41:54,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:41:54,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:41:54,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:41:54,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:41:54,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:41:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 03:41:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:41:54,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:54,227 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] [2020-10-29 03:41:54,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:54,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:54,238 INFO L82 PathProgramCache]: Analyzing trace with hash -573516862, now seen corresponding path program 1 times [2020-10-29 03:41:54,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:54,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012540295] [2020-10-29 03:41:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:54,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:54,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:55,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:55,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:41:55,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:41:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-10-29 03:41:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:55,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:41:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:41:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:41:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:41:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:55,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:55,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:55,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:55,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:41:55,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:55,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:55,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:41:55,573 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 03:41:55,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012540295] [2020-10-29 03:41:55,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:41:55,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:41:55,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643530602] [2020-10-29 03:41:55,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:41:55,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:55,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:41:55,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:41:55,602 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-29 03:41:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:55,821 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-10-29 03:41:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:41:55,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 03:41:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:55,832 INFO L225 Difference]: With dead ends: 67 [2020-10-29 03:41:55,832 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 03:41:55,836 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 03:41:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 03:41:55,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-29 03:41:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:41:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-29 03:41:55,883 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2020-10-29 03:41:55,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:55,883 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-29 03:41:55,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:41:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-29 03:41:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:41:55,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:55,885 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] [2020-10-29 03:41:55,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:41:55,886 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:55,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1849424926, now seen corresponding path program 1 times [2020-10-29 03:41:55,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:55,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233175911] [2020-10-29 03:41:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:00,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:42:00,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:42:00,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:00,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:42:00,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:42:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:42:01,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:01,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:01,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:01,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:42:01,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:01,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:42:01,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:01,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233175911] [2020-10-29 03:42:01,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:01,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:42:01,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393212703] [2020-10-29 03:42:01,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:42:01,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:01,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:42:01,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:01,285 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 9 states. [2020-10-29 03:42:01,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:01,845 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-29 03:42:01,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:42:01,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-29 03:42:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:01,860 INFO L225 Difference]: With dead ends: 45 [2020-10-29 03:42:01,862 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:42:01,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:42:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:42:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-29 03:42:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:42:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-29 03:42:01,889 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 28 [2020-10-29 03:42:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:01,893 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-29 03:42:01,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:42:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-29 03:42:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:42:01,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:01,895 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:42:01,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:42:01,901 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:01,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:01,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1563391736, now seen corresponding path program 1 times [2020-10-29 03:42:01,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:01,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573952167] [2020-10-29 03:42:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:01,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:02,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:06,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:42:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:42:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:06,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:06,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:42:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:42:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:42:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:07,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:07,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:07,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:07,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:42:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:07,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:42:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:07,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:07,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:07,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:07,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:42:07,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:07,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:42:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:42:07,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573952167] [2020-10-29 03:42:07,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:07,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:42:07,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833181939] [2020-10-29 03:42:07,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:42:07,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:07,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:42:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:07,337 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 11 states. [2020-10-29 03:42:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:08,053 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-29 03:42:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:42:08,054 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-29 03:42:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:08,058 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:42:08,058 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:42:08,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:42:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:42:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-10-29 03:42:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:42:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-29 03:42:08,073 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 36 [2020-10-29 03:42:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:08,074 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-29 03:42:08,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:42:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-29 03:42:08,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:42:08,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:08,076 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:42:08,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:42:08,076 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash -844158698, now seen corresponding path program 2 times [2020-10-29 03:42:08,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:08,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853583835] [2020-10-29 03:42:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:13,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:42:13,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:42:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:13,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:13,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:42:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:42:13,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:13,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:13,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:13,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:13,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:13,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:13,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:42:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:13,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:42:13,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:13,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:13,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853583835] [2020-10-29 03:42:13,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:13,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:42:13,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838241947] [2020-10-29 03:42:13,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:42:13,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:13,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:42:13,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:13,408 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 11 states. [2020-10-29 03:42:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:14,139 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2020-10-29 03:42:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:42:14,142 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-29 03:42:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:14,143 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:42:14,144 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:42:14,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:42:14,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:42:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-29 03:42:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:42:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-29 03:42:14,159 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 37 [2020-10-29 03:42:14,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:14,159 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-29 03:42:14,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:42:14,159 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-29 03:42:14,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:42:14,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:14,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 03:42:14,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:42:14,162 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:14,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:14,162 INFO L82 PathProgramCache]: Analyzing trace with hash 476527218, now seen corresponding path program 3 times [2020-10-29 03:42:14,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:14,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966007519] [2020-10-29 03:42:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:19,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:42:19,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:42:19,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:42:19,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:19,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:42:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:42:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:19,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:19,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:19,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:19,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:19,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:19,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:19,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:19,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:42:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:19,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:19,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:19,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:19,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:19,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:19,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:42:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:19,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:19,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:19,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:19,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:42:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:42:19,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966007519] [2020-10-29 03:42:19,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:19,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:42:19,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105148478] [2020-10-29 03:42:19,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:42:19,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:19,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:42:19,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:42:19,556 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 13 states. [2020-10-29 03:42:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:20,479 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2020-10-29 03:42:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:42:20,486 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-29 03:42:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:20,488 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:42:20,488 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 03:42:20,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:42:20,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 03:42:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2020-10-29 03:42:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:42:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-29 03:42:20,500 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 49 [2020-10-29 03:42:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:20,500 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-29 03:42:20,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:42:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-29 03:42:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 03:42:20,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:20,502 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-10-29 03:42:20,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:42:20,502 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:20,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:20,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1272419890, now seen corresponding path program 4 times [2020-10-29 03:42:20,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:20,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105498147] [2020-10-29 03:42:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:20,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:25,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:25,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 03:42:25,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:42:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:42:25,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:25,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:42:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:42:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:25,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:25,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:25,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:25,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:25,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:25,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:25,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:25,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:25,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:42:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:25,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:25,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:25,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:25,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:25,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:25,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:42:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:26,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:26,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:26,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:26,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:42:26,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:26,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:42:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:42:26,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105498147] [2020-10-29 03:42:26,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:26,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:42:26,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889499718] [2020-10-29 03:42:26,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:42:26,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:26,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:42:26,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:42:26,165 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 15 states. [2020-10-29 03:42:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:27,362 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2020-10-29 03:42:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:42:27,363 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-29 03:42:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:27,365 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:42:27,365 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 03:42:27,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:42:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 03:42:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2020-10-29 03:42:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:42:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-10-29 03:42:27,379 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 51 [2020-10-29 03:42:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:27,379 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-10-29 03:42:27,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:42:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-10-29 03:42:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:42:27,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:27,381 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 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] [2020-10-29 03:42:27,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:42:27,381 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:27,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1621098994, now seen corresponding path program 5 times [2020-10-29 03:42:27,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:27,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201965027] [2020-10-29 03:42:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:32,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:32,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 03:42:32,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:42:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:32,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:32,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:42:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:42:32,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:32,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:33,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:33,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:33,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:33,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:42:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:33,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:33,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:33,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:42:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:33,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:33,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:42:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:42:33,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201965027] [2020-10-29 03:42:33,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:33,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:42:33,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262913224] [2020-10-29 03:42:33,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:42:33,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:42:33,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:42:33,135 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 17 states. [2020-10-29 03:42:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:34,220 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2020-10-29 03:42:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:42:34,221 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-29 03:42:34,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:34,223 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:42:34,223 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 03:42:34,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:42:34,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 03:42:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 58. [2020-10-29 03:42:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 03:42:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-29 03:42:34,237 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 53 [2020-10-29 03:42:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:34,237 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-29 03:42:34,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:42:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-29 03:42:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:42:34,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:34,239 INFO L422 BasicCegarLoop]: trace histogram [8, 3, 3, 3, 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] [2020-10-29 03:42:34,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:42:34,239 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:34,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:34,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1694268850, now seen corresponding path program 6 times [2020-10-29 03:42:34,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:34,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257461001] [2020-10-29 03:42:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:39,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:42:39,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:42:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:42:39,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:39,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:42:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:42:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:40,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:40,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:42:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:40,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:40,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:40,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:42:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:42:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:40,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 41 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:42:40,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257461001] [2020-10-29 03:42:40,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:40,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:42:40,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995980489] [2020-10-29 03:42:40,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:42:40,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:40,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:42:40,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:42:40,170 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 19 states. [2020-10-29 03:42:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:41,392 INFO L93 Difference]: Finished difference Result 112 states and 145 transitions. [2020-10-29 03:42:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:42:41,393 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-29 03:42:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:41,395 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:42:41,396 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 03:42:41,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:42:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 03:42:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 60. [2020-10-29 03:42:41,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:42:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-10-29 03:42:41,412 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 55 [2020-10-29 03:42:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:41,415 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-10-29 03:42:41,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:42:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-10-29 03:42:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:42:41,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:41,417 INFO L422 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 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] [2020-10-29 03:42:41,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:42:41,417 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:41,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1003943566, now seen corresponding path program 7 times [2020-10-29 03:42:41,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:41,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12772551] [2020-10-29 03:42:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:42,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:42:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:47,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:47,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:47,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:47,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:47,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:42:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:47,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:47,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:47,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:47,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:47,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:47,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:42:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:47,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:47,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:47,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:47,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:47,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:47,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:47,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:42:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:42:47,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12772551] [2020-10-29 03:42:47,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:47,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:42:47,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614681849] [2020-10-29 03:42:47,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:42:47,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:47,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:42:47,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:42:47,563 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 21 states. [2020-10-29 03:42:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:48,974 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2020-10-29 03:42:48,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:42:48,975 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-29 03:42:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:48,976 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:42:48,977 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 03:42:48,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:42:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 03:42:48,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 62. [2020-10-29 03:42:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 03:42:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-10-29 03:42:48,990 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 57 [2020-10-29 03:42:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:48,990 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-10-29 03:42:48,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:42:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-10-29 03:42:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:42:48,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:48,991 INFO L422 BasicCegarLoop]: trace histogram [12, 3, 3, 3, 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] [2020-10-29 03:42:48,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:42:48,992 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:48,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:48,992 INFO L82 PathProgramCache]: Analyzing trace with hash 174171442, now seen corresponding path program 8 times [2020-10-29 03:42:48,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:48,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069983724] [2020-10-29 03:42:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:54,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:54,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:42:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:42:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:54,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:54,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:42:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:42:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:55,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:55,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:55,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:55,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:55,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:42:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:55,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:55,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:55,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:55,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:55,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:42:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:55,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:55,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:55,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:55,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:55,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:55,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:42:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:42:55,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069983724] [2020-10-29 03:42:55,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:55,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:42:55,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89451449] [2020-10-29 03:42:55,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:42:55,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:42:55,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:42:55,454 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 23 states. [2020-10-29 03:42:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:56,937 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2020-10-29 03:42:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:42:56,938 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 59 [2020-10-29 03:42:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:56,940 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:42:56,941 INFO L226 Difference]: Without dead ends: 109 [2020-10-29 03:42:56,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:42:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-29 03:42:56,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 64. [2020-10-29 03:42:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 03:42:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2020-10-29 03:42:56,955 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 59 [2020-10-29 03:42:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:56,955 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2020-10-29 03:42:56,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:42:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2020-10-29 03:42:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:42:56,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:56,957 INFO L422 BasicCegarLoop]: trace histogram [14, 3, 3, 3, 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] [2020-10-29 03:42:56,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:42:56,957 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:56,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:56,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1528672014, now seen corresponding path program 9 times [2020-10-29 03:42:56,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:56,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745331104] [2020-10-29 03:42:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:01,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:01,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:43:01,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:43:01,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:43:01,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:01,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:43:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:43:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:43:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:03,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:03,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:03,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:03,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:03,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:43:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:03,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:03,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:03,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:43:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:43:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:43:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:03,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:03,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:03,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:03,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:03,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:43:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:43:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:43:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 13 proven. 110 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:43:03,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745331104] [2020-10-29 03:43:03,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:03,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:43:03,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454122220] [2020-10-29 03:43:03,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:43:03,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:03,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:43:03,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:43:03,686 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 25 states. [2020-10-29 03:43:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:05,255 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2020-10-29 03:43:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:43:05,256 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 61 [2020-10-29 03:43:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:05,258 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:43:05,258 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 03:43:05,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=282, Invalid=710, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:43:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 03:43:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 66. [2020-10-29 03:43:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:43:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-10-29 03:43:05,281 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 61 [2020-10-29 03:43:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:05,288 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-10-29 03:43:05,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:43:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-10-29 03:43:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 03:43:05,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:05,291 INFO L422 BasicCegarLoop]: trace histogram [16, 3, 3, 3, 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] [2020-10-29 03:43:05,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:43:05,292 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:05,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1578693454, now seen corresponding path program 10 times [2020-10-29 03:43:05,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:05,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693128143] [2020-10-29 03:43:05,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:10,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:43:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:12,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:12,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:12,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:12,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:12,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:43:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:12,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:12,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:12,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:12,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:12,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:43:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:43:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:43:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:12,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:12,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:12,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:12,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:12,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:43:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:43:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:43:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 13 proven. 141 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:43:12,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693128143] [2020-10-29 03:43:12,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:12,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:43:12,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327448037] [2020-10-29 03:43:12,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:43:12,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:12,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:43:12,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=483, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:43:12,430 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 27 states. [2020-10-29 03:43:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:13,825 INFO L93 Difference]: Finished difference Result 144 states and 201 transitions. [2020-10-29 03:43:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:43:13,826 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 63 [2020-10-29 03:43:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:13,827 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:43:13,828 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 03:43:13,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=331, Invalid=791, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:43:13,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 03:43:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 68. [2020-10-29 03:43:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 03:43:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-10-29 03:43:13,853 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 63 [2020-10-29 03:43:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:13,853 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-10-29 03:43:13,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:43:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-10-29 03:43:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:43:13,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:13,857 INFO L422 BasicCegarLoop]: trace histogram [18, 3, 3, 3, 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] [2020-10-29 03:43:13,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:43:13,858 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:13,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:13,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1890310258, now seen corresponding path program 11 times [2020-10-29 03:43:13,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:13,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261405217] [2020-10-29 03:43:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:18,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:18,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:43:18,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:43:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:43:18,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:18,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:43:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:43:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:43:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:20,423 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:43:20,597 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:43:20,787 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:43:20,988 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 11 [2020-10-29 03:43:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:21,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:21,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:21,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:21,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:43:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:21,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:21,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:21,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:21,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:21,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:21,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:21,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:43:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:43:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:43:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:21,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:43:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:21,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 9 proven. 176 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:43:21,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261405217] [2020-10-29 03:43:21,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:21,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:43:21,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569625306] [2020-10-29 03:43:21,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:43:21,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:21,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:43:21,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=494, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:43:21,306 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 28 states. [2020-10-29 03:43:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:22,897 INFO L93 Difference]: Finished difference Result 149 states and 207 transitions. [2020-10-29 03:43:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:43:22,898 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 65 [2020-10-29 03:43:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:22,900 INFO L225 Difference]: With dead ends: 149 [2020-10-29 03:43:22,900 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:43:22,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=343, Invalid=713, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:43:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:43:22,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 69. [2020-10-29 03:43:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:43:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2020-10-29 03:43:22,911 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 65 [2020-10-29 03:43:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:22,911 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2020-10-29 03:43:22,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:43:22,911 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2020-10-29 03:43:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:43:22,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:22,912 INFO L422 BasicCegarLoop]: trace histogram [19, 3, 3, 3, 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] [2020-10-29 03:43:22,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:43:22,912 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:22,913 INFO L82 PathProgramCache]: Analyzing trace with hash 573693776, now seen corresponding path program 12 times [2020-10-29 03:43:22,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:22,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139662597] [2020-10-29 03:43:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:22,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:27,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:27,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:27,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:43:27,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:43:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:43:27,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:43:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:29,461 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 18 [2020-10-29 03:43:29,643 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 18 [2020-10-29 03:43:29,832 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 18 [2020-10-29 03:43:30,025 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 18 [2020-10-29 03:43:30,228 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-10-29 03:43:30,441 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 13 [2020-10-29 03:43:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:30,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:30,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:30,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:30,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:43:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:30,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:30,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:30,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:30,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:30,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:30,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:43:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:43:30,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:43:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:43:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:30,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:30,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:30,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:30,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:30,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:43:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:30,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 10 proven. 197 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 03:43:30,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139662597] [2020-10-29 03:43:30,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:30,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:43:30,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883076582] [2020-10-29 03:43:30,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:43:30,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:43:30,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=598, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:43:30,786 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 31 states. [2020-10-29 03:43:32,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:32,365 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2020-10-29 03:43:32,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:43:32,366 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 66 [2020-10-29 03:43:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:32,368 INFO L225 Difference]: With dead ends: 133 [2020-10-29 03:43:32,368 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:43:32,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=444, Invalid=888, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:43:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:43:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 70. [2020-10-29 03:43:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 03:43:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2020-10-29 03:43:32,380 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 66 [2020-10-29 03:43:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:32,380 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2020-10-29 03:43:32,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:43:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2020-10-29 03:43:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:43:32,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:32,381 INFO L422 BasicCegarLoop]: trace histogram [20, 3, 3, 3, 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] [2020-10-29 03:43:32,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:43:32,382 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:32,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:32,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1586711502, now seen corresponding path program 13 times [2020-10-29 03:43:32,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:32,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326191496] [2020-10-29 03:43:32,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:33,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 03:43:37,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:43:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:43:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:37,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:43:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:43:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:43:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:38,845 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:43:39,024 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:43:39,211 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:43:39,412 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:43:39,626 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:43:39,844 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 11 [2020-10-29 03:43:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:40,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:40,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:40,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:40,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:40,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:40,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:40,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:40,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:43:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:40,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:40,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:40,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:40,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:40,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:43:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:43:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:43:40,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:40,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:43:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:40,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:40,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:40,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:40,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:40,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:43:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 9 proven. 215 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:43:40,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326191496] [2020-10-29 03:43:40,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:40,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:43:40,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960185527] [2020-10-29 03:43:40,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:43:40,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:40,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:43:40,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=561, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:43:40,168 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 30 states. [2020-10-29 03:43:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:41,926 INFO L93 Difference]: Finished difference Result 157 states and 221 transitions. [2020-10-29 03:43:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:43:41,927 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 67 [2020-10-29 03:43:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:41,929 INFO L225 Difference]: With dead ends: 157 [2020-10-29 03:43:41,929 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:43:41,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=396, Invalid=794, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:43:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:43:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 71. [2020-10-29 03:43:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:43:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-10-29 03:43:41,941 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 67 [2020-10-29 03:43:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:41,941 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-10-29 03:43:41,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:43:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-10-29 03:43:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:43:41,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:41,942 INFO L422 BasicCegarLoop]: trace histogram [21, 3, 3, 3, 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] [2020-10-29 03:43:41,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:43:41,942 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:41,943 INFO L82 PathProgramCache]: Analyzing trace with hash 160201616, now seen corresponding path program 14 times [2020-10-29 03:43:41,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:41,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169506330] [2020-10-29 03:43:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:43:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:43:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:48,838 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:43:49,046 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:43:49,258 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:43:49,501 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:43:49,737 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 11 [2020-10-29 03:43:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:49,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:49,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:49,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:49,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:49,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:43:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:49,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:49,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:49,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:43:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:43:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:43:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:43:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:50,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:50,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:43:50,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:50,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:50,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:50,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:50,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:50,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:43:50,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:50,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 9 proven. 236 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:43:50,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169506330] [2020-10-29 03:43:50,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:50,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:43:50,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622878939] [2020-10-29 03:43:50,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:43:50,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:50,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:43:50,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=596, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:43:50,149 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 31 states. [2020-10-29 03:43:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:52,031 INFO L93 Difference]: Finished difference Result 161 states and 228 transitions. [2020-10-29 03:43:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:43:52,034 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 68 [2020-10-29 03:43:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:52,036 INFO L225 Difference]: With dead ends: 161 [2020-10-29 03:43:52,036 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:43:52,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=424, Invalid=836, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:43:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:43:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 72. [2020-10-29 03:43:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 03:43:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-10-29 03:43:52,056 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 68 [2020-10-29 03:43:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:52,056 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-10-29 03:43:52,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:43:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-10-29 03:43:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:43:52,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:52,059 INFO L422 BasicCegarLoop]: trace histogram [22, 3, 3, 3, 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] [2020-10-29 03:43:52,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:43:52,059 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:52,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1520066574, now seen corresponding path program 15 times [2020-10-29 03:43:52,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:52,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444082742] [2020-10-29 03:43:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 03:43:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:43:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:43:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:57,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:43:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:43:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:43:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:58,653 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:43:58,831 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:43:59,017 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:43:59,221 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:43:59,424 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:43:59,619 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:43:59,859 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:44:00,105 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 11 [2020-10-29 03:44:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:00,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:00,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:00,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:00,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:00,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:44:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:00,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:00,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:00,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:00,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:44:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:44:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:44:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:44:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:00,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:00,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:44:00,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:00,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:44:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 9 proven. 258 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:44:00,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444082742] [2020-10-29 03:44:00,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:00,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:44:00,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716702986] [2020-10-29 03:44:00,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:44:00,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:00,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:44:00,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=632, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:44:00,457 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 32 states. [2020-10-29 03:44:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:02,324 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2020-10-29 03:44:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:44:02,325 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 69 [2020-10-29 03:44:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:02,326 INFO L225 Difference]: With dead ends: 165 [2020-10-29 03:44:02,326 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:44:02,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=453, Invalid=879, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:44:02,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:44:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 73. [2020-10-29 03:44:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:44:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-10-29 03:44:02,339 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 69 [2020-10-29 03:44:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:02,339 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-10-29 03:44:02,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:44:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-10-29 03:44:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:44:02,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:02,340 INFO L422 BasicCegarLoop]: trace histogram [23, 3, 3, 3, 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] [2020-10-29 03:44:02,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:44:02,340 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:02,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2068772912, now seen corresponding path program 16 times [2020-10-29 03:44:02,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:02,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583454383] [2020-10-29 03:44:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:07,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:44:07,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:44:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:44:07,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:07,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:44:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:44:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:44:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:08,868 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:44:09,044 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:44:09,243 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:44:09,446 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:44:09,661 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:44:09,882 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:44:10,123 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:44:10,375 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-10-29 03:44:10,635 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 11 [2020-10-29 03:44:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:10,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:10,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:10,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:10,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:10,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:10,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:44:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:44:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:44:10,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:11,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:44:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:11,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:11,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:11,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:11,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:11,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:11,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:44:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 9 proven. 281 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:44:11,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583454383] [2020-10-29 03:44:11,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:11,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:44:11,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138894445] [2020-10-29 03:44:11,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:44:11,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:11,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:44:11,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=669, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:44:11,067 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 33 states. [2020-10-29 03:44:12,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:12,966 INFO L93 Difference]: Finished difference Result 169 states and 242 transitions. [2020-10-29 03:44:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:44:12,968 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 70 [2020-10-29 03:44:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:12,970 INFO L225 Difference]: With dead ends: 169 [2020-10-29 03:44:12,970 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:44:12,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=483, Invalid=923, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:44:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:44:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 74. [2020-10-29 03:44:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 03:44:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-10-29 03:44:12,982 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 70 [2020-10-29 03:44:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:12,982 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-10-29 03:44:12,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:44:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-10-29 03:44:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 03:44:12,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:12,983 INFO L422 BasicCegarLoop]: trace histogram [24, 3, 3, 3, 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] [2020-10-29 03:44:12,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:44:12,983 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1898800206, now seen corresponding path program 17 times [2020-10-29 03:44:12,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:12,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489250672] [2020-10-29 03:44:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:14,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:18,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:44:18,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:44:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:44:18,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:18,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:44:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:44:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:44:18,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:19,825 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:44:20,014 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:44:20,215 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:44:20,424 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:44:20,668 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:44:20,917 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-10-29 03:44:21,176 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-29 03:44:21,449 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 11 [2020-10-29 03:44:21,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:21,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:21,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:21,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:21,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:21,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:21,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:21,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:44:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:21,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:21,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:21,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:21,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:21,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:21,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:21,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:44:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:44:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:44:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:44:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:21,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:21,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:21,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:44:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 9 proven. 305 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:44:21,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489250672] [2020-10-29 03:44:21,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:21,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:44:21,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732890939] [2020-10-29 03:44:21,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:44:21,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:21,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:44:21,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=707, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:44:21,883 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 34 states. [2020-10-29 03:44:24,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:24,014 INFO L93 Difference]: Finished difference Result 173 states and 249 transitions. [2020-10-29 03:44:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:44:24,015 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 71 [2020-10-29 03:44:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:24,018 INFO L225 Difference]: With dead ends: 173 [2020-10-29 03:44:24,018 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 03:44:24,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=514, Invalid=968, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:44:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 03:44:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 75. [2020-10-29 03:44:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:44:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-29 03:44:24,028 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 71 [2020-10-29 03:44:24,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:24,029 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-29 03:44:24,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:44:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-29 03:44:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:44:24,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:24,030 INFO L422 BasicCegarLoop]: trace histogram [25, 3, 3, 3, 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] [2020-10-29 03:44:24,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:44:24,030 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:24,030 INFO L82 PathProgramCache]: Analyzing trace with hash -924613616, now seen corresponding path program 18 times [2020-10-29 03:44:24,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:24,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422577352] [2020-10-29 03:44:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:29,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:29,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:44:29,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:44:29,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:44:29,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:29,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:44:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:44:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:44:29,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:30,582 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:44:30,759 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:44:30,948 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:44:31,148 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:44:31,367 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:44:31,594 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:44:31,835 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:44:32,084 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-10-29 03:44:32,354 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-29 03:44:32,629 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 16 [2020-10-29 03:44:32,913 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 11 [2020-10-29 03:44:33,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:33,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:33,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:33,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:33,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:33,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:33,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:33,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:44:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:33,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:33,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:44:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:44:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:44:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:33,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:44:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:33,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:33,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:33,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:33,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:33,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:33,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:33,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:33,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:33,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:44:33,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 9 proven. 330 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:44:33,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422577352] [2020-10-29 03:44:33,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:33,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:44:33,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980636125] [2020-10-29 03:44:33,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:44:33,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:33,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:44:33,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=746, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:44:33,298 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 35 states. [2020-10-29 03:44:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:35,473 INFO L93 Difference]: Finished difference Result 177 states and 256 transitions. [2020-10-29 03:44:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:44:35,474 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 72 [2020-10-29 03:44:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:35,476 INFO L225 Difference]: With dead ends: 177 [2020-10-29 03:44:35,477 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 03:44:35,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=546, Invalid=1014, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:44:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 03:44:35,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 76. [2020-10-29 03:44:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:44:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2020-10-29 03:44:35,489 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 72 [2020-10-29 03:44:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:35,490 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2020-10-29 03:44:35,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:44:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2020-10-29 03:44:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 03:44:35,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:35,491 INFO L422 BasicCegarLoop]: trace histogram [26, 3, 3, 3, 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] [2020-10-29 03:44:35,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:44:35,491 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:35,492 INFO L82 PathProgramCache]: Analyzing trace with hash -789600398, now seen corresponding path program 19 times [2020-10-29 03:44:35,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:35,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170547540] [2020-10-29 03:44:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:35,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:37,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:40,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:40,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:44:40,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:44:40,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:44:40,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:40,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:44:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:44:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:44:40,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:42,082 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:44:42,263 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:44:42,458 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:44:42,660 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:44:42,872 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:44:43,075 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:44:43,312 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:44:43,572 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-10-29 03:44:43,838 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-29 03:44:44,112 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 16 [2020-10-29 03:44:44,401 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 16 [2020-10-29 03:44:44,704 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 11 [2020-10-29 03:44:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:44,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:44:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:44,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:44,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:44,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:44,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:44,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:44:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:44:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:44:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:45,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:44:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:45,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:45,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:45,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:45,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:44:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:45,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 9 proven. 356 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:44:45,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170547540] [2020-10-29 03:44:45,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:45,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:44:45,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30773539] [2020-10-29 03:44:45,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:44:45,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:44:45,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=786, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:44:45,092 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 36 states. [2020-10-29 03:44:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:47,270 INFO L93 Difference]: Finished difference Result 181 states and 263 transitions. [2020-10-29 03:44:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:44:47,271 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 73 [2020-10-29 03:44:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:47,273 INFO L225 Difference]: With dead ends: 181 [2020-10-29 03:44:47,273 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 03:44:47,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=579, Invalid=1061, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:44:47,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 03:44:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 77. [2020-10-29 03:44:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:44:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-10-29 03:44:47,287 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 73 [2020-10-29 03:44:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:47,288 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-10-29 03:44:47,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:44:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-10-29 03:44:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:44:47,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:47,289 INFO L422 BasicCegarLoop]: trace histogram [27, 3, 3, 3, 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] [2020-10-29 03:44:47,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:44:47,289 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash -899157936, now seen corresponding path program 20 times [2020-10-29 03:44:47,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:47,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916069338] [2020-10-29 03:44:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:47,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:50,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:52,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:44:52,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:44:52,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:44:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:53,907 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:44:54,087 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:44:54,278 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:44:54,482 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:44:54,700 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:44:54,925 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:44:55,157 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:44:55,412 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-10-29 03:44:55,677 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-29 03:44:55,950 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 16 [2020-10-29 03:44:56,254 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 16 [2020-10-29 03:44:56,566 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 16 [2020-10-29 03:44:56,885 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 11 [2020-10-29 03:44:57,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:57,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:57,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:57,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:57,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:57,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:57,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:44:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:57,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:57,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:57,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:57,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:44:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:44:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:44:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:57,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:44:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:57,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:44:57,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:57,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:44:57,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 9 proven. 383 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:44:57,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916069338] [2020-10-29 03:44:57,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:57,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:44:57,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814278390] [2020-10-29 03:44:57,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:44:57,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:44:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=827, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:44:57,295 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 37 states. [2020-10-29 03:44:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:59,595 INFO L93 Difference]: Finished difference Result 185 states and 270 transitions. [2020-10-29 03:44:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:44:59,597 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2020-10-29 03:44:59,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:59,600 INFO L225 Difference]: With dead ends: 185 [2020-10-29 03:44:59,600 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 03:44:59,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=613, Invalid=1109, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:44:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 03:44:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 78. [2020-10-29 03:44:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:44:59,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-10-29 03:44:59,615 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 74 [2020-10-29 03:44:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:59,615 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-10-29 03:44:59,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:44:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-10-29 03:44:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:44:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:59,628 INFO L422 BasicCegarLoop]: trace histogram [28, 3, 3, 3, 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] [2020-10-29 03:44:59,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:44:59,628 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash -474318, now seen corresponding path program 21 times [2020-10-29 03:44:59,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:59,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233478565] [2020-10-29 03:44:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:59,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:59,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:59,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:04,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:04,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 03:45:04,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:45:04,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:45:04,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:04,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:45:04,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:45:04,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:45:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:06,202 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:45:06,383 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:45:06,576 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:45:06,777 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:45:06,989 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:45:07,216 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:45:07,456 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:45:07,713 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-10-29 03:45:07,978 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-29 03:45:08,254 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 16 [2020-10-29 03:45:08,545 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 16 [2020-10-29 03:45:08,863 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 16 [2020-10-29 03:45:09,180 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 16 [2020-10-29 03:45:09,513 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 11 [2020-10-29 03:45:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:09,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:09,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:09,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:45:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:09,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:45:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:09,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:09,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:09,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:45:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:45:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:45:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:09,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:45:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:09,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:45:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 9 proven. 411 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:45:09,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233478565] [2020-10-29 03:45:09,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:09,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:45:09,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712636307] [2020-10-29 03:45:09,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:45:09,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:09,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:45:09,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=869, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:09,921 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 38 states. [2020-10-29 03:45:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:12,246 INFO L93 Difference]: Finished difference Result 189 states and 277 transitions. [2020-10-29 03:45:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:45:12,249 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 75 [2020-10-29 03:45:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:12,250 INFO L225 Difference]: With dead ends: 189 [2020-10-29 03:45:12,250 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 03:45:12,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=648, Invalid=1158, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:45:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 03:45:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 79. [2020-10-29 03:45:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:45:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-10-29 03:45:12,264 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 75 [2020-10-29 03:45:12,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:12,265 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-10-29 03:45:12,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:45:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-10-29 03:45:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:45:12,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:12,266 INFO L422 BasicCegarLoop]: trace histogram [29, 3, 3, 3, 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] [2020-10-29 03:45:12,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:45:12,266 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:12,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2088914064, now seen corresponding path program 22 times [2020-10-29 03:45:12,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:12,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207343675] [2020-10-29 03:45:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:17,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:45:17,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:45:17,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:45:17,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:17,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:45:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:45:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:45:17,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:18,877 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-29 03:45:19,047 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:45:19,232 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:45:19,438 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:45:19,669 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:45:19,899 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:45:20,142 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:45:20,399 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-10-29 03:45:20,666 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-29 03:45:20,947 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 16 [2020-10-29 03:45:21,244 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 16 [2020-10-29 03:45:21,557 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 16 [2020-10-29 03:45:21,873 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 16 [2020-10-29 03:45:22,212 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 16 [2020-10-29 03:45:22,562 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 11 [2020-10-29 03:45:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:22,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:22,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:22,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:22,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:22,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:45:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:22,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:22,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:45:22,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:45:22,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:22,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:45:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:45:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:45:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:22,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:45:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:22,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:22,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:45:22,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:22,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:22,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:45:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 9 proven. 440 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:45:23,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207343675] [2020-10-29 03:45:23,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:23,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:45:23,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131828002] [2020-10-29 03:45:23,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:45:23,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:23,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:45:23,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:45:23,012 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 39 states. [2020-10-29 03:45:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:25,116 INFO L93 Difference]: Finished difference Result 193 states and 284 transitions. [2020-10-29 03:45:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:45:25,118 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2020-10-29 03:45:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:25,119 INFO L225 Difference]: With dead ends: 193 [2020-10-29 03:45:25,120 INFO L226 Difference]: Without dead ends: 170 [2020-10-29 03:45:25,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=684, Invalid=1208, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:45:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-29 03:45:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 80. [2020-10-29 03:45:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 03:45:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2020-10-29 03:45:25,134 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 76 [2020-10-29 03:45:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:25,135 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2020-10-29 03:45:25,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:45:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2020-10-29 03:45:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:45:25,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:25,136 INFO L422 BasicCegarLoop]: trace histogram [30, 3, 3, 3, 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] [2020-10-29 03:45:25,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:45:25,136 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:25,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1859522830, now seen corresponding path program 23 times [2020-10-29 03:45:25,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:25,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086281701] [2020-10-29 03:45:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:25,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:27,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:30,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:30,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 03:45:30,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:45:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-29 03:45:30,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:30,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:45:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:45:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 03:45:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:31,926 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-10-29 03:45:32,110 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 16 [2020-10-29 03:45:32,306 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-29 03:45:32,519 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 16 [2020-10-29 03:45:32,732 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 16 [2020-10-29 03:45:32,969 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 16 [2020-10-29 03:45:33,228 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-10-29 03:45:33,500 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-10-29 03:45:33,804 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 16 [2020-10-29 03:45:34,102 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 16 [2020-10-29 03:45:34,417 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 16 [2020-10-29 03:45:34,738 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 16 [2020-10-29 03:45:35,073 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 16 [2020-10-29 03:45:35,427 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 16 [2020-10-29 03:45:35,793 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 11 [2020-10-29 03:45:36,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:36,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:36,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:36,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:36,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:45:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:36,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:45:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:45:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:36,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:36,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:36,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:45:36,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:36,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:36,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:36,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:45:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 470 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:45:36,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086281701] [2020-10-29 03:45:36,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:36,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:45:36,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252097434] [2020-10-29 03:45:36,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:45:36,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:45:36,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=956, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:45:36,228 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 40 states.