/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:05:46,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:05:46,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:05:46,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:05:46,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:05:46,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:05:46,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:05:46,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:05:46,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:05:46,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:05:46,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:05:46,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:05:46,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:05:46,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:05:46,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:05:46,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:05:46,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:05:46,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:05:46,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:05:46,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:05:46,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:05:46,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:05:46,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:05:46,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:05:46,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:05:46,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:05:46,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:05:46,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:05:46,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:05:46,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:05:46,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:05:46,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:05:46,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:05:46,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:05:46,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:05:46,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:05:46,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:05:46,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:05:46,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:05:46,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:05:46,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:05:46,778 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 [2020-10-28 12:05:46,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:05:46,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:05:46,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:05:46,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:05:46,817 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:05:46,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:05:46,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:05:46,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:05:46,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:05:46,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:05:46,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:05:46,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:05:46,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:05:46,819 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:05:46,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:05:46,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:05:46,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:05:46,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:05:46,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:05:46,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:05:46,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:05:46,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:05:46,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:05:46,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:05:46,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:05:46,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:05:46,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:05:46,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:05:46,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:05:46,823 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:05:47,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:05:47,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:05:47,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:05:47,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:05:47,227 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:05:47,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24.c [2020-10-28 12:05:47,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10dffdeda/53d88589a48f4e08b18dcea2ff3b40bf/FLAGe78181972 [2020-10-28 12:05:48,128 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:05:48,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label24.c [2020-10-28 12:05:48,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10dffdeda/53d88589a48f4e08b18dcea2ff3b40bf/FLAGe78181972 [2020-10-28 12:05:48,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10dffdeda/53d88589a48f4e08b18dcea2ff3b40bf [2020-10-28 12:05:48,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:05:48,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:05:48,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:05:48,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:05:48,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:05:48,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:05:48" (1/1) ... [2020-10-28 12:05:48,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ccacbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:48, skipping insertion in model container [2020-10-28 12:05:48,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:05:48" (1/1) ... [2020-10-28 12:05:48,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:05:48,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:05:49,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:05:49,073 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:05:49,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:05:49,315 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:05:49,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49 WrapperNode [2020-10-28 12:05:49,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:05:49,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:05:49,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:05:49,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:05:49,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (1/1) ... [2020-10-28 12:05:49,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (1/1) ... [2020-10-28 12:05:49,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (1/1) ... [2020-10-28 12:05:49,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (1/1) ... [2020-10-28 12:05:49,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (1/1) ... [2020-10-28 12:05:49,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (1/1) ... [2020-10-28 12:05:49,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (1/1) ... [2020-10-28 12:05:49,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:05:49,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:05:49,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:05:49,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:05:49,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (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 [2020-10-28 12:05:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:05:49,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:05:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:05:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:05:49,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:05:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:05:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:05:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:05:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:05:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:05:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:05:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:05:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:05:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:05:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:05:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:05:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:05:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:05:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:05:51,744 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:05:51,745 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:05:51,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:05:51 BoogieIcfgContainer [2020-10-28 12:05:51,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:05:51,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:05:51,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:05:51,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:05:51,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:05:48" (1/3) ... [2020-10-28 12:05:51,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d43c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:05:51, skipping insertion in model container [2020-10-28 12:05:51,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:49" (2/3) ... [2020-10-28 12:05:51,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d43c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:05:51, skipping insertion in model container [2020-10-28 12:05:51,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:05:51" (3/3) ... [2020-10-28 12:05:51,758 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label24.c [2020-10-28 12:05:51,771 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:05:51,777 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:05:51,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:05:51,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:05:51,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:05:51,824 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:05:51,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:05:51,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:05:51,825 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:05:51,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:05:51,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:05:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:05:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 12:05:51,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:51,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:51,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:51,872 INFO L82 PathProgramCache]: Analyzing trace with hash 362907144, now seen corresponding path program 1 times [2020-10-28 12:05:51,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:51,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214102530] [2020-10-28 12:05:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:52,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:52,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 12:05:52,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-28 12:05:52,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:52,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:05:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:05:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 12:05:52,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:05:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:52,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:52,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:52,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:52,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:05:52,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:52,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:52,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:05:52,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214102530] [2020-10-28 12:05:52,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:05:52,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:05:52,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927847902] [2020-10-28 12:05:53,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:05:53,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:53,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:05:53,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:05:53,020 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:05:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:56,176 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-28 12:05:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:56,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 12:05:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:56,197 INFO L225 Difference]: With dead ends: 793 [2020-10-28 12:05:56,197 INFO L226 Difference]: Without dead ends: 432 [2020-10-28 12:05:56,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-28 12:05:56,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-28 12:05:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-28 12:05:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-28 12:05:56,306 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 58 [2020-10-28 12:05:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:56,309 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-28 12:05:56,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:05:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-28 12:05:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 12:05:56,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:56,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:56,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:05:56,319 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash 245201540, now seen corresponding path program 1 times [2020-10-28 12:05:56,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:56,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293293430] [2020-10-28 12:05:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 12:05:58,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1856 [2020-10-28 12:05:58,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:05:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:05:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:05:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:58,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:05:58,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:05:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:58,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:05:58,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 12:05:58,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:58,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:05:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:05:58,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293293430] [2020-10-28 12:05:58,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:05:58,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:05:58,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166660105] [2020-10-28 12:05:58,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:58,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:58,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:58,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:58,843 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 7 states. [2020-10-28 12:06:02,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:02,659 INFO L93 Difference]: Finished difference Result 1312 states and 1985 transitions. [2020-10-28 12:06:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:02,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-28 12:06:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:02,672 INFO L225 Difference]: With dead ends: 1312 [2020-10-28 12:06:02,672 INFO L226 Difference]: Without dead ends: 892 [2020-10-28 12:06:02,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-10-28 12:06:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 823. [2020-10-28 12:06:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-28 12:06:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1103 transitions. [2020-10-28 12:06:02,788 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1103 transitions. Word has length 130 [2020-10-28 12:06:02,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:02,788 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1103 transitions. [2020-10-28 12:06:02,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:02,789 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1103 transitions. [2020-10-28 12:06:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 12:06:02,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:02,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:02,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:06:02,795 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:02,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1163118476, now seen corresponding path program 1 times [2020-10-28 12:06:02,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:02,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395479560] [2020-10-28 12:06:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:02,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:04,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:04,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:06:04,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:06:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1939 [2020-10-28 12:06:04,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:04,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:06:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:04,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:04,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:04,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:06:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:04,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:04,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:05,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:05,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:06:05,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:05,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:05,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:05,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395479560] [2020-10-28 12:06:05,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:06:05,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:06:05,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501882196] [2020-10-28 12:06:05,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:05,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:05,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:05,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:05,240 INFO L87 Difference]: Start difference. First operand 823 states and 1103 transitions. Second operand 7 states. [2020-10-28 12:06:08,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:08,523 INFO L93 Difference]: Finished difference Result 2067 states and 2736 transitions. [2020-10-28 12:06:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:08,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-28 12:06:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:08,533 INFO L225 Difference]: With dead ends: 2067 [2020-10-28 12:06:08,534 INFO L226 Difference]: Without dead ends: 1250 [2020-10-28 12:06:08,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-10-28 12:06:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1217. [2020-10-28 12:06:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-10-28 12:06:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1538 transitions. [2020-10-28 12:06:08,621 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1538 transitions. Word has length 138 [2020-10-28 12:06:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:08,625 INFO L481 AbstractCegarLoop]: Abstraction has 1217 states and 1538 transitions. [2020-10-28 12:06:08,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1538 transitions. [2020-10-28 12:06:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 12:06:08,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:08,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:08,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:06:08,630 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:08,630 INFO L82 PathProgramCache]: Analyzing trace with hash 278157307, now seen corresponding path program 1 times [2020-10-28 12:06:08,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:08,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326270538] [2020-10-28 12:06:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:09,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:09,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 12:06:09,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-28 12:06:09,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:09,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:06:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 12:06:09,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:09,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:09,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:09,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:09,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:06:09,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:09,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:09,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:09,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:09,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:09,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:06:09,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:09,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:06:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:09,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326270538] [2020-10-28 12:06:09,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:09,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:09,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245023322] [2020-10-28 12:06:09,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:09,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:09,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:09,698 INFO L87 Difference]: Start difference. First operand 1217 states and 1538 transitions. Second operand 5 states. [2020-10-28 12:06:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:12,494 INFO L93 Difference]: Finished difference Result 2461 states and 3303 transitions. [2020-10-28 12:06:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:12,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-28 12:06:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:12,505 INFO L225 Difference]: With dead ends: 2461 [2020-10-28 12:06:12,505 INFO L226 Difference]: Without dead ends: 1628 [2020-10-28 12:06:12,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-10-28 12:06:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1612. [2020-10-28 12:06:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-10-28 12:06:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2099 transitions. [2020-10-28 12:06:12,564 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2099 transitions. Word has length 189 [2020-10-28 12:06:12,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:12,565 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2099 transitions. [2020-10-28 12:06:12,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2099 transitions. [2020-10-28 12:06:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 12:06:12,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:12,571 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:12,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:06:12,572 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1785124070, now seen corresponding path program 1 times [2020-10-28 12:06:12,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:12,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393548713] [2020-10-28 12:06:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:15,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:15,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-28 12:06:15,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2559 [2020-10-28 12:06:15,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:15,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:06:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:06:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:15,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:15,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:15,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:15,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:15,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:15,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:15,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:15,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:15,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:15,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:15,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:15,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:06:15,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:15,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:06:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:15,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:15,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:15,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:15,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:06:15,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:06:15,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:15,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:06:15,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:15,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393548713] [2020-10-28 12:06:15,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:15,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:15,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053590047] [2020-10-28 12:06:15,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:15,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:15,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:15,874 INFO L87 Difference]: Start difference. First operand 1612 states and 2099 transitions. Second operand 7 states. [2020-10-28 12:06:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:18,704 INFO L93 Difference]: Finished difference Result 3274 states and 4410 transitions. [2020-10-28 12:06:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:06:18,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-28 12:06:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:18,717 INFO L225 Difference]: With dead ends: 3274 [2020-10-28 12:06:18,718 INFO L226 Difference]: Without dead ends: 2046 [2020-10-28 12:06:18,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-10-28 12:06:18,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2026. [2020-10-28 12:06:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2026 states. [2020-10-28 12:06:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2648 transitions. [2020-10-28 12:06:18,789 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2648 transitions. Word has length 246 [2020-10-28 12:06:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:18,790 INFO L481 AbstractCegarLoop]: Abstraction has 2026 states and 2648 transitions. [2020-10-28 12:06:18,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2648 transitions. [2020-10-28 12:06:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-28 12:06:18,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:18,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:18,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:06:18,797 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:18,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:18,797 INFO L82 PathProgramCache]: Analyzing trace with hash -2072666994, now seen corresponding path program 1 times [2020-10-28 12:06:18,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:18,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441985801] [2020-10-28 12:06:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-28 12:06:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2603 [2020-10-28 12:06:21,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:06:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:06:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:21,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:21,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:06:21,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:21,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:21,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 12:06:21,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:06:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:22,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:22,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:06:22,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:06:22,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:22,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:06:22,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:22,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441985801] [2020-10-28 12:06:22,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:22,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:22,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740530194] [2020-10-28 12:06:22,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:22,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:22,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:22,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:22,286 INFO L87 Difference]: Start difference. First operand 2026 states and 2648 transitions. Second operand 7 states. [2020-10-28 12:06:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:25,756 INFO L93 Difference]: Finished difference Result 5291 states and 7249 transitions. [2020-10-28 12:06:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:06:25,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-28 12:06:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:25,779 INFO L225 Difference]: With dead ends: 5291 [2020-10-28 12:06:25,779 INFO L226 Difference]: Without dead ends: 3649 [2020-10-28 12:06:25,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:06:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2020-10-28 12:06:25,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3598. [2020-10-28 12:06:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3598 states. [2020-10-28 12:06:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 4548 transitions. [2020-10-28 12:06:25,904 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 4548 transitions. Word has length 247 [2020-10-28 12:06:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:25,905 INFO L481 AbstractCegarLoop]: Abstraction has 3598 states and 4548 transitions. [2020-10-28 12:06:25,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 4548 transitions. [2020-10-28 12:06:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 12:06:25,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:25,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:25,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:06:25,912 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:25,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1181620386, now seen corresponding path program 1 times [2020-10-28 12:06:25,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:25,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354490624] [2020-10-28 12:06:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 12:06:28,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:28,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2421 [2020-10-28 12:06:28,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:06:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:06:28,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:28,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:06:28,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:28,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:06:28,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:06:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:06:28,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 12:06:28,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:06:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:29,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354490624] [2020-10-28 12:06:29,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:29,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:29,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123802510] [2020-10-28 12:06:29,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:29,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:29,143 INFO L87 Difference]: Start difference. First operand 3598 states and 4548 transitions. Second operand 7 states. [2020-10-28 12:06:32,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:32,584 INFO L93 Difference]: Finished difference Result 8200 states and 10753 transitions. [2020-10-28 12:06:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:32,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-28 12:06:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:32,608 INFO L225 Difference]: With dead ends: 8200 [2020-10-28 12:06:32,609 INFO L226 Difference]: Without dead ends: 4986 [2020-10-28 12:06:32,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:32,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2020-10-28 12:06:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4952. [2020-10-28 12:06:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4952 states. [2020-10-28 12:06:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4952 states to 4952 states and 6227 transitions. [2020-10-28 12:06:32,766 INFO L78 Accepts]: Start accepts. Automaton has 4952 states and 6227 transitions. Word has length 257 [2020-10-28 12:06:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:32,767 INFO L481 AbstractCegarLoop]: Abstraction has 4952 states and 6227 transitions. [2020-10-28 12:06:32,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4952 states and 6227 transitions. [2020-10-28 12:06:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 12:06:32,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:32,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:32,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:06:32,775 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:32,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2044638978, now seen corresponding path program 1 times [2020-10-28 12:06:32,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:32,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839464623] [2020-10-28 12:06:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:33,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:33,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 12:06:33,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-28 12:06:33,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:33,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:06:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 12:06:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:33,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:33,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:33,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:33,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:06:33,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:33,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:33,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:33,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:33,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:33,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:06:33,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:33,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:33,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:33,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:33,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:06:33,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:33,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:06:33,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:33,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:06:33,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:06:34,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839464623] [2020-10-28 12:06:34,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:34,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:34,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692795550] [2020-10-28 12:06:34,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:34,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:34,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:34,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:34,042 INFO L87 Difference]: Start difference. First operand 4952 states and 6227 transitions. Second operand 5 states. [2020-10-28 12:06:37,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:37,096 INFO L93 Difference]: Finished difference Result 10518 states and 13514 transitions. [2020-10-28 12:06:37,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:37,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-28 12:06:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:37,126 INFO L225 Difference]: With dead ends: 10518 [2020-10-28 12:06:37,126 INFO L226 Difference]: Without dead ends: 5950 [2020-10-28 12:06:37,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5950 states. [2020-10-28 12:06:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5950 to 5722. [2020-10-28 12:06:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5722 states. [2020-10-28 12:06:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 7211 transitions. [2020-10-28 12:06:37,310 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 7211 transitions. Word has length 258 [2020-10-28 12:06:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:37,311 INFO L481 AbstractCegarLoop]: Abstraction has 5722 states and 7211 transitions. [2020-10-28 12:06:37,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 7211 transitions. [2020-10-28 12:06:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 12:06:37,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:37,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:37,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:06:37,319 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:37,319 INFO L82 PathProgramCache]: Analyzing trace with hash 652178009, now seen corresponding path program 1 times [2020-10-28 12:06:37,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:37,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545839011] [2020-10-28 12:06:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:37,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:38,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:39,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:39,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 12:06:39,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1856 [2020-10-28 12:06:39,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:39,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:06:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:06:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:39,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:39,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:39,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:39,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:39,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:39,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:39,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:39,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:39,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:39,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:39,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:39,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:39,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:39,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:39,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 12:06:39,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:39,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:06:39,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:39,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:06:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:39,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:39,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:06:39,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:39,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:06:39,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:39,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:06:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:39,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545839011] [2020-10-28 12:06:39,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:39,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:39,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959921395] [2020-10-28 12:06:39,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:39,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:39,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:39,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:39,976 INFO L87 Difference]: Start difference. First operand 5722 states and 7211 transitions. Second operand 7 states. [2020-10-28 12:06:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:44,620 INFO L93 Difference]: Finished difference Result 13232 states and 17190 transitions. [2020-10-28 12:06:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:44,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-28 12:06:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:44,660 INFO L225 Difference]: With dead ends: 13232 [2020-10-28 12:06:44,660 INFO L226 Difference]: Without dead ends: 7894 [2020-10-28 12:06:44,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7894 states. [2020-10-28 12:06:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7894 to 7866. [2020-10-28 12:06:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7866 states. [2020-10-28 12:06:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7866 states to 7866 states and 9677 transitions. [2020-10-28 12:06:44,885 INFO L78 Accepts]: Start accepts. Automaton has 7866 states and 9677 transitions. Word has length 258 [2020-10-28 12:06:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:44,886 INFO L481 AbstractCegarLoop]: Abstraction has 7866 states and 9677 transitions. [2020-10-28 12:06:44,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7866 states and 9677 transitions. [2020-10-28 12:06:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 12:06:44,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:44,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:44,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:06:44,901 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:44,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1659058979, now seen corresponding path program 1 times [2020-10-28 12:06:44,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:44,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227016985] [2020-10-28 12:06:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:45,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-28 12:06:50,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:06:50,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 12:06:50,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:06:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:50,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:50,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:06:50,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:50,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 12:06:50,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:06:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:50,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:06:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:50,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:50,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:06:50,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:06:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-28 12:06:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:06:50,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:06:50,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:06:50,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:50,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 150 proven. 4 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-28 12:06:50,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227016985] [2020-10-28 12:06:50,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:50,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:50,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643128655] [2020-10-28 12:06:50,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:50,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:50,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:50,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:50,642 INFO L87 Difference]: Start difference. First operand 7866 states and 9677 transitions. Second operand 5 states. [2020-10-28 12:06:50,775 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:06:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:53,510 INFO L93 Difference]: Finished difference Result 16294 states and 20696 transitions. [2020-10-28 12:06:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:53,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-28 12:06:53,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:53,545 INFO L225 Difference]: With dead ends: 16294 [2020-10-28 12:06:53,545 INFO L226 Difference]: Without dead ends: 8812 [2020-10-28 12:06:53,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:53,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8812 states. [2020-10-28 12:06:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8812 to 8797. [2020-10-28 12:06:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8797 states. [2020-10-28 12:06:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8797 states to 8797 states and 10834 transitions. [2020-10-28 12:06:53,760 INFO L78 Accepts]: Start accepts. Automaton has 8797 states and 10834 transitions. Word has length 342 [2020-10-28 12:06:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:53,761 INFO L481 AbstractCegarLoop]: Abstraction has 8797 states and 10834 transitions. [2020-10-28 12:06:53,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8797 states and 10834 transitions. [2020-10-28 12:06:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-28 12:06:53,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:53,775 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:53,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:06:53,776 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash -258725566, now seen corresponding path program 1 times [2020-10-28 12:06:53,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:53,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51532807] [2020-10-28 12:06:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-28 12:06:54,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-28 12:06:54,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:06:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:06:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:54,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:54,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:06:54,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:54,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:54,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:06:54,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:06:54,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:54,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:06:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:55,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:55,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:06:55,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:55,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:06:55,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:55,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:06:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:06:55,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51532807] [2020-10-28 12:06:55,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:55,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:55,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156794215] [2020-10-28 12:06:55,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:55,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:55,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:55,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:55,330 INFO L87 Difference]: Start difference. First operand 8797 states and 10834 transitions. Second operand 7 states. [2020-10-28 12:06:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:58,502 INFO L93 Difference]: Finished difference Result 14729 states and 18471 transitions. [2020-10-28 12:06:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:06:58,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-28 12:06:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:58,536 INFO L225 Difference]: With dead ends: 14729 [2020-10-28 12:06:58,536 INFO L226 Difference]: Without dead ends: 9002 [2020-10-28 12:06:58,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9002 states. [2020-10-28 12:06:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9002 to 8985. [2020-10-28 12:06:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8985 states. [2020-10-28 12:06:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8985 states to 8985 states and 11057 transitions. [2020-10-28 12:06:58,755 INFO L78 Accepts]: Start accepts. Automaton has 8985 states and 11057 transitions. Word has length 343 [2020-10-28 12:06:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:58,756 INFO L481 AbstractCegarLoop]: Abstraction has 8985 states and 11057 transitions. [2020-10-28 12:06:58,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8985 states and 11057 transitions. [2020-10-28 12:06:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-28 12:06:58,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:58,772 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:58,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:06:58,772 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:58,773 INFO L82 PathProgramCache]: Analyzing trace with hash -304503921, now seen corresponding path program 1 times [2020-10-28 12:06:58,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:58,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598979075] [2020-10-28 12:06:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:59,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-28 12:07:01,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2423 [2020-10-28 12:07:01,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:07:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:07:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:01,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:07:01,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:01,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:07:01,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:07:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:07:01,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:07:01,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:07:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-28 12:07:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:07:01,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:07:01,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:07:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 234 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:07:02,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598979075] [2020-10-28 12:07:02,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:02,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:02,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069850846] [2020-10-28 12:07:02,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:02,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:02,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:02,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:02,071 INFO L87 Difference]: Start difference. First operand 8985 states and 11057 transitions. Second operand 7 states. [2020-10-28 12:07:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:05,719 INFO L93 Difference]: Finished difference Result 18917 states and 23609 transitions. [2020-10-28 12:07:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:07:05,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-28 12:07:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:05,780 INFO L225 Difference]: With dead ends: 18917 [2020-10-28 12:07:05,780 INFO L226 Difference]: Without dead ends: 13002 [2020-10-28 12:07:05,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13002 states. [2020-10-28 12:07:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13002 to 12601. [2020-10-28 12:07:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12601 states. [2020-10-28 12:07:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12601 states to 12601 states and 15408 transitions. [2020-10-28 12:07:06,127 INFO L78 Accepts]: Start accepts. Automaton has 12601 states and 15408 transitions. Word has length 345 [2020-10-28 12:07:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:06,128 INFO L481 AbstractCegarLoop]: Abstraction has 12601 states and 15408 transitions. [2020-10-28 12:07:06,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 12601 states and 15408 transitions. [2020-10-28 12:07:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-28 12:07:06,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:06,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:06,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:07:06,146 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:06,147 INFO L82 PathProgramCache]: Analyzing trace with hash 75818365, now seen corresponding path program 1 times [2020-10-28 12:07:06,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:06,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698428099] [2020-10-28 12:07:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:06,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:07,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-28 12:07:07,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:07:07,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-28 12:07:07,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:07,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:07:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-28 12:07:07,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:07,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:07,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:07,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:07:07,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:07,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:07:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:07,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:07,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:07,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:07,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:07:07,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:07,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:07:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:07,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:08,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:08,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:08,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:07:08,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:07:08,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:08,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-28 12:07:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:07:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:07:08,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698428099] [2020-10-28 12:07:08,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:07:08,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:07:08,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035938471] [2020-10-28 12:07:08,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:07:08,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:08,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:07:08,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:07:08,209 INFO L87 Difference]: Start difference. First operand 12601 states and 15408 transitions. Second operand 6 states. [2020-10-28 12:07:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:10,413 INFO L93 Difference]: Finished difference Result 21567 states and 26696 transitions. [2020-10-28 12:07:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:07:10,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 348 [2020-10-28 12:07:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:10,452 INFO L225 Difference]: With dead ends: 21567 [2020-10-28 12:07:10,452 INFO L226 Difference]: Without dead ends: 12606 [2020-10-28 12:07:10,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12606 states. [2020-10-28 12:07:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12606 to 12588. [2020-10-28 12:07:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12588 states. [2020-10-28 12:07:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12588 states to 12588 states and 15370 transitions. [2020-10-28 12:07:10,837 INFO L78 Accepts]: Start accepts. Automaton has 12588 states and 15370 transitions. Word has length 348 [2020-10-28 12:07:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:10,838 INFO L481 AbstractCegarLoop]: Abstraction has 12588 states and 15370 transitions. [2020-10-28 12:07:10,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:07:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 12588 states and 15370 transitions. [2020-10-28 12:07:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-28 12:07:10,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:10,857 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:10,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:07:10,858 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:10,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:10,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1543724552, now seen corresponding path program 1 times [2020-10-28 12:07:10,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:10,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787446781] [2020-10-28 12:07:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:11,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2211 [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:07:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:07:13,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:13,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:13,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:13,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:13,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:13,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:13,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:13,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:13,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:13,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:13,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:13,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:13,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:13,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:13,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:13,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:07:13,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:13,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:13,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:07:13,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:13,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:13,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:07:13,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:07:13,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:13,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:13,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:07:13,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:13,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-28 12:07:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:13,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:13,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:07:13,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:13,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:07:13,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:13,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:07:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:07:13,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787446781] [2020-10-28 12:07:13,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:13,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:13,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916430277] [2020-10-28 12:07:13,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:13,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:13,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:13,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:13,956 INFO L87 Difference]: Start difference. First operand 12588 states and 15370 transitions. Second operand 7 states. [2020-10-28 12:07:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:17,690 INFO L93 Difference]: Finished difference Result 22322 states and 27549 transitions. [2020-10-28 12:07:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:07:17,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-28 12:07:17,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:17,737 INFO L225 Difference]: With dead ends: 22322 [2020-10-28 12:07:17,737 INFO L226 Difference]: Without dead ends: 13374 [2020-10-28 12:07:17,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:07:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13374 states. [2020-10-28 12:07:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13374 to 13156. [2020-10-28 12:07:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13156 states. [2020-10-28 12:07:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13156 states to 13156 states and 16018 transitions. [2020-10-28 12:07:18,045 INFO L78 Accepts]: Start accepts. Automaton has 13156 states and 16018 transitions. Word has length 372 [2020-10-28 12:07:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:18,046 INFO L481 AbstractCegarLoop]: Abstraction has 13156 states and 16018 transitions. [2020-10-28 12:07:18,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 13156 states and 16018 transitions. [2020-10-28 12:07:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-28 12:07:18,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:18,067 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:18,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:07:18,067 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:18,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:18,068 INFO L82 PathProgramCache]: Analyzing trace with hash -570209548, now seen corresponding path program 1 times [2020-10-28 12:07:18,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:18,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434299386] [2020-10-28 12:07:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:18,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:19,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-28 12:07:23,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:07:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 12:07:23,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-28 12:07:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:07:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:23,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:23,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:07:23,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:07:23,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:07:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:07:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-28 12:07:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:07:23,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:07:23,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:07:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:07:23,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434299386] [2020-10-28 12:07:23,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:23,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:23,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906690644] [2020-10-28 12:07:23,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:23,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:23,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:23,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:23,944 INFO L87 Difference]: Start difference. First operand 13156 states and 16018 transitions. Second operand 7 states. [2020-10-28 12:07:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:27,507 INFO L93 Difference]: Finished difference Result 22930 states and 28437 transitions. [2020-10-28 12:07:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:07:27,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2020-10-28 12:07:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:27,550 INFO L225 Difference]: With dead ends: 22930 [2020-10-28 12:07:27,550 INFO L226 Difference]: Without dead ends: 13214 [2020-10-28 12:07:27,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:07:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13214 states. [2020-10-28 12:07:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13214 to 13152. [2020-10-28 12:07:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13152 states. [2020-10-28 12:07:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 15932 transitions. [2020-10-28 12:07:27,873 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 15932 transitions. Word has length 377 [2020-10-28 12:07:27,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:27,874 INFO L481 AbstractCegarLoop]: Abstraction has 13152 states and 15932 transitions. [2020-10-28 12:07:27,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:27,874 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 15932 transitions. [2020-10-28 12:07:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-28 12:07:27,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:27,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:27,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:07:27,897 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash -122155235, now seen corresponding path program 1 times [2020-10-28 12:07:27,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:27,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231815737] [2020-10-28 12:07:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:28,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:29,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:29,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-28 12:07:29,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:29,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1996 [2020-10-28 12:07:29,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:29,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:29,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:07:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:07:29,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:30,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:30,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:30,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:07:30,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:30,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:30,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:30,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:07:30,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:07:30,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:30,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:07:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:07:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:30,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:30,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:07:30,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 12:07:30,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:30,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:07:30,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-28 12:07:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:30,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:30,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:07:30,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:07:30,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:30,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:30,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:30,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:07:30,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:30,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:07:30,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231815737] [2020-10-28 12:07:30,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:30,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:30,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490773994] [2020-10-28 12:07:30,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:30,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:30,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:30,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:30,850 INFO L87 Difference]: Start difference. First operand 13152 states and 15932 transitions. Second operand 7 states. [2020-10-28 12:07:34,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:34,368 INFO L93 Difference]: Finished difference Result 26144 states and 31727 transitions. [2020-10-28 12:07:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:07:34,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-28 12:07:34,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:34,404 INFO L225 Difference]: With dead ends: 26144 [2020-10-28 12:07:34,405 INFO L226 Difference]: Without dead ends: 13376 [2020-10-28 12:07:34,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:07:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2020-10-28 12:07:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 13350. [2020-10-28 12:07:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13350 states. [2020-10-28 12:07:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13350 states to 13350 states and 16084 transitions. [2020-10-28 12:07:34,714 INFO L78 Accepts]: Start accepts. Automaton has 13350 states and 16084 transitions. Word has length 388 [2020-10-28 12:07:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:34,714 INFO L481 AbstractCegarLoop]: Abstraction has 13350 states and 16084 transitions. [2020-10-28 12:07:34,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 13350 states and 16084 transitions. [2020-10-28 12:07:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-28 12:07:34,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:34,730 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:34,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:07:34,731 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:34,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1910177300, now seen corresponding path program 1 times [2020-10-28 12:07:34,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:34,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858070816] [2020-10-28 12:07:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:35,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:36,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:36,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-28 12:07:36,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2032 [2020-10-28 12:07:36,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:36,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 12:07:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:07:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-28 12:07:36,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:37,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:37,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:37,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:37,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:37,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:07:37,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:37,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:07:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:37,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:37,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:37,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 12:07:37,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:37,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:07:37,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:37,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:37,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:07:37,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:07:37,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:37,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:07:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:07:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:07:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:37,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:37,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:07:37,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 12:07:37,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:37,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:07:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 93 proven. 226 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-28 12:07:37,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858070816] [2020-10-28 12:07:37,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:37,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 12:07:37,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299534668] [2020-10-28 12:07:37,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:07:37,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:37,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:07:37,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:07:37,903 INFO L87 Difference]: Start difference. First operand 13350 states and 16084 transitions. Second operand 10 states. [2020-10-28 12:07:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:45,429 INFO L93 Difference]: Finished difference Result 31287 states and 38841 transitions. [2020-10-28 12:07:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 12:07:45,430 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 391 [2020-10-28 12:07:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:45,500 INFO L225 Difference]: With dead ends: 31287 [2020-10-28 12:07:45,501 INFO L226 Difference]: Without dead ends: 20415 [2020-10-28 12:07:45,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-28 12:07:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20415 states. [2020-10-28 12:07:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20415 to 20226. [2020-10-28 12:07:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20226 states. [2020-10-28 12:07:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20226 states to 20226 states and 23943 transitions. [2020-10-28 12:07:46,002 INFO L78 Accepts]: Start accepts. Automaton has 20226 states and 23943 transitions. Word has length 391 [2020-10-28 12:07:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:46,003 INFO L481 AbstractCegarLoop]: Abstraction has 20226 states and 23943 transitions. [2020-10-28 12:07:46,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 12:07:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 20226 states and 23943 transitions. [2020-10-28 12:07:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-28 12:07:46,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:46,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:46,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:07:46,021 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:46,022 INFO L82 PathProgramCache]: Analyzing trace with hash 307982570, now seen corresponding path program 1 times [2020-10-28 12:07:46,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:46,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941845670] [2020-10-28 12:07:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:46,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:48,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-28 12:07:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:48,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:48,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:48,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:07:48,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:48,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:48,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:48,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:48,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:48,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:48,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:48,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:07:48,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:07:48,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:48,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:07:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:48,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:07:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:48,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 12:07:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:07:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:48,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 12:07:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 308 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:07:48,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941845670] [2020-10-28 12:07:48,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:48,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:07:48,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468600519] [2020-10-28 12:07:48,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:07:48,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:07:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:07:48,839 INFO L87 Difference]: Start difference. First operand 20226 states and 23943 transitions. Second operand 6 states. [2020-10-28 12:07:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:52,120 INFO L93 Difference]: Finished difference Result 38380 states and 45945 transitions. [2020-10-28 12:07:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:07:52,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 422 [2020-10-28 12:07:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:52,188 INFO L225 Difference]: With dead ends: 38380 [2020-10-28 12:07:52,188 INFO L226 Difference]: Without dead ends: 21806 [2020-10-28 12:07:52,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:07:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21806 states. [2020-10-28 12:07:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21806 to 21755. [2020-10-28 12:07:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21755 states. [2020-10-28 12:07:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21755 states to 21755 states and 25735 transitions. [2020-10-28 12:07:52,680 INFO L78 Accepts]: Start accepts. Automaton has 21755 states and 25735 transitions. Word has length 422 [2020-10-28 12:07:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:52,681 INFO L481 AbstractCegarLoop]: Abstraction has 21755 states and 25735 transitions. [2020-10-28 12:07:52,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:07:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 21755 states and 25735 transitions. [2020-10-28 12:07:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-10-28 12:07:52,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:52,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:52,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:07:52,702 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:52,702 INFO L82 PathProgramCache]: Analyzing trace with hash -245386910, now seen corresponding path program 1 times [2020-10-28 12:07:52,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:52,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385307548] [2020-10-28 12:07:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:57,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:57,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-28 12:07:57,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:07:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 12:07:57,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:57,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-28 12:07:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:07:57,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:58,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:58,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:58,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:58,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:07:58,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:58,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:07:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:58,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:07:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:07:58,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:58,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:07:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:58,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:58,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:07:58,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:58,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:07:58,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:58,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 12:07:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:58,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-28 12:07:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:58,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:58,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:07:58,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:07:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:58,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:07:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-28 12:07:59,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385307548] [2020-10-28 12:07:59,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:59,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:59,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619254840] [2020-10-28 12:07:59,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:59,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:59,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:59,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:59,006 INFO L87 Difference]: Start difference. First operand 21755 states and 25735 transitions. Second operand 7 states. [2020-10-28 12:08:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:03,135 INFO L93 Difference]: Finished difference Result 40680 states and 48361 transitions. [2020-10-28 12:08:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:08:03,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 444 [2020-10-28 12:08:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:03,180 INFO L225 Difference]: With dead ends: 40680 [2020-10-28 12:08:03,181 INFO L226 Difference]: Without dead ends: 22192 [2020-10-28 12:08:03,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:08:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22192 states. [2020-10-28 12:08:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22192 to 21751. [2020-10-28 12:08:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21751 states. [2020-10-28 12:08:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21751 states to 21751 states and 25508 transitions. [2020-10-28 12:08:03,648 INFO L78 Accepts]: Start accepts. Automaton has 21751 states and 25508 transitions. Word has length 444 [2020-10-28 12:08:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:03,649 INFO L481 AbstractCegarLoop]: Abstraction has 21751 states and 25508 transitions. [2020-10-28 12:08:03,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 21751 states and 25508 transitions. [2020-10-28 12:08:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-28 12:08:03,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:03,665 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:03,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:08:03,666 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash -59607612, now seen corresponding path program 1 times [2020-10-28 12:08:03,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:03,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606016896] [2020-10-28 12:08:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:06,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:06,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-28 12:08:06,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:08:06,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2719 [2020-10-28 12:08:06,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:06,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:06,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:08:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 12:08:06,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:06,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:06,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:08:06,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:08:06,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:06,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:06,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:08:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:06,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:08:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:06,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:08:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:08:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:08:07,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606016896] [2020-10-28 12:08:07,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:07,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:07,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370964065] [2020-10-28 12:08:07,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:07,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:07,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:07,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:07,442 INFO L87 Difference]: Start difference. First operand 21751 states and 25508 transitions. Second operand 7 states. [2020-10-28 12:08:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:11,369 INFO L93 Difference]: Finished difference Result 41819 states and 49564 transitions. [2020-10-28 12:08:11,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:08:11,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 458 [2020-10-28 12:08:11,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:11,413 INFO L225 Difference]: With dead ends: 41819 [2020-10-28 12:08:11,413 INFO L226 Difference]: Without dead ends: 23720 [2020-10-28 12:08:11,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:08:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23720 states. [2020-10-28 12:08:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23720 to 23473. [2020-10-28 12:08:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23473 states. [2020-10-28 12:08:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23473 states to 23473 states and 27376 transitions. [2020-10-28 12:08:11,898 INFO L78 Accepts]: Start accepts. Automaton has 23473 states and 27376 transitions. Word has length 458 [2020-10-28 12:08:11,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:11,899 INFO L481 AbstractCegarLoop]: Abstraction has 23473 states and 27376 transitions. [2020-10-28 12:08:11,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 23473 states and 27376 transitions. [2020-10-28 12:08:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-28 12:08:11,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:11,913 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:11,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:08:11,914 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:11,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2144352453, now seen corresponding path program 1 times [2020-10-28 12:08:11,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:11,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240808497] [2020-10-28 12:08:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:12,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:12,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:15,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:17,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:17,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-28 12:08:17,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:08:17,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 12:08:17,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:17,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 12:08:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-28 12:08:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-28 12:08:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:08:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:17,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:17,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:17,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:17,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:08:17,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:17,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:17,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:17,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:17,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:08:17,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:08:17,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:17,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 12:08:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:17,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:08:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:17,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:08:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:17,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-28 12:08:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:08:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 233 proven. 61 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 12:08:18,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240808497] [2020-10-28 12:08:18,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:18,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:08:18,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671106468] [2020-10-28 12:08:18,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:08:18,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:18,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:08:18,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:08:18,088 INFO L87 Difference]: Start difference. First operand 23473 states and 27376 transitions. Second operand 8 states. [2020-10-28 12:08:23,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:23,058 INFO L93 Difference]: Finished difference Result 48940 states and 57662 transitions. [2020-10-28 12:08:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:08:23,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 461 [2020-10-28 12:08:23,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:23,103 INFO L225 Difference]: With dead ends: 48940 [2020-10-28 12:08:23,103 INFO L226 Difference]: Without dead ends: 24061 [2020-10-28 12:08:23,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:08:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24061 states. [2020-10-28 12:08:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24061 to 23639. [2020-10-28 12:08:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23639 states. [2020-10-28 12:08:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23639 states to 23639 states and 27190 transitions. [2020-10-28 12:08:23,602 INFO L78 Accepts]: Start accepts. Automaton has 23639 states and 27190 transitions. Word has length 461 [2020-10-28 12:08:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:23,603 INFO L481 AbstractCegarLoop]: Abstraction has 23639 states and 27190 transitions. [2020-10-28 12:08:23,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:08:23,603 INFO L276 IsEmpty]: Start isEmpty. Operand 23639 states and 27190 transitions. [2020-10-28 12:08:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-28 12:08:23,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:23,623 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:23,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:08:23,624 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash 313921430, now seen corresponding path program 1 times [2020-10-28 12:08:23,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:23,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217700861] [2020-10-28 12:08:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-28 12:08:26,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:08:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2579 [2020-10-28 12:08:26,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-28 12:08:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 12:08:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:26,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:26,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:08:26,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:08:26,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:08:26,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:26,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:08:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:26,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:08:26,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:08:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:27,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:27,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 12:08:27,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-28 12:08:27,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:27,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:27,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 12:08:27,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 453 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-28 12:08:27,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217700861] [2020-10-28 12:08:27,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:27,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:27,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106062033] [2020-10-28 12:08:27,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:27,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:27,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:27,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:27,682 INFO L87 Difference]: Start difference. First operand 23639 states and 27190 transitions. Second operand 7 states. [2020-10-28 12:08:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:32,298 INFO L93 Difference]: Finished difference Result 48456 states and 55817 transitions. [2020-10-28 12:08:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:08:32,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-28 12:08:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:32,371 INFO L225 Difference]: With dead ends: 48456 [2020-10-28 12:08:32,371 INFO L226 Difference]: Without dead ends: 25201 [2020-10-28 12:08:32,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25201 states. [2020-10-28 12:08:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25201 to 25145. [2020-10-28 12:08:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25145 states. [2020-10-28 12:08:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25145 states to 25145 states and 28590 transitions. [2020-10-28 12:08:32,894 INFO L78 Accepts]: Start accepts. Automaton has 25145 states and 28590 transitions. Word has length 536 [2020-10-28 12:08:32,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:32,895 INFO L481 AbstractCegarLoop]: Abstraction has 25145 states and 28590 transitions. [2020-10-28 12:08:32,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 25145 states and 28590 transitions. [2020-10-28 12:08:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-28 12:08:32,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:32,917 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:32,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:08:32,918 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:32,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:32,918 INFO L82 PathProgramCache]: Analyzing trace with hash -119360792, now seen corresponding path program 1 times [2020-10-28 12:08:32,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:32,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133777658] [2020-10-28 12:08:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:34,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:34,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-28 12:08:34,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-10-28 12:08:34,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:34,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-28 12:08:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:08:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:34,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:34,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:34,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:08:34,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:34,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:34,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:34,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:34,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:08:34,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:34,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:34,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:34,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:34,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:34,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:34,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:08:34,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:08:34,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:34,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:08:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:34,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:34,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:08:34,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:08:34,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:34,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:34,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:08:34,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:34,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-28 12:08:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:34,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:34,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:34,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:08:34,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:08:34,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:34,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:08:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:34,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-28 12:08:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:35,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 514 proven. 85 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2020-10-28 12:08:35,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133777658] [2020-10-28 12:08:35,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:35,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:35,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825445686] [2020-10-28 12:08:35,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:35,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:35,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:35,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:35,327 INFO L87 Difference]: Start difference. First operand 25145 states and 28590 transitions. Second operand 7 states. [2020-10-28 12:08:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:39,347 INFO L93 Difference]: Finished difference Result 47901 states and 54578 transitions. [2020-10-28 12:08:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:08:39,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 556 [2020-10-28 12:08:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:39,391 INFO L225 Difference]: With dead ends: 47901 [2020-10-28 12:08:39,391 INFO L226 Difference]: Without dead ends: 24484 [2020-10-28 12:08:39,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24484 states. [2020-10-28 12:08:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24484 to 22700. [2020-10-28 12:08:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22700 states. [2020-10-28 12:08:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22700 states to 22700 states and 25529 transitions. [2020-10-28 12:08:39,829 INFO L78 Accepts]: Start accepts. Automaton has 22700 states and 25529 transitions. Word has length 556 [2020-10-28 12:08:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:39,830 INFO L481 AbstractCegarLoop]: Abstraction has 22700 states and 25529 transitions. [2020-10-28 12:08:39,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 22700 states and 25529 transitions. [2020-10-28 12:08:39,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-28 12:08:39,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:39,849 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:39,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:08:39,850 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:39,851 INFO L82 PathProgramCache]: Analyzing trace with hash -911068931, now seen corresponding path program 1 times [2020-10-28 12:08:39,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:39,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519956760] [2020-10-28 12:08:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:42,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-28 12:08:42,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2490 [2020-10-28 12:08:42,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:42,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:08:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 442 [2020-10-28 12:08:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:08:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:42,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:42,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:42,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:08:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:42,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:42,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:42,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:08:42,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:42,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:08:42,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:42,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:08:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:42,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:08:42,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:42,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:08:42,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:42,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:42,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:08:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:42,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:08:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-28 12:08:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:43,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:43,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:08:43,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 12:08:43,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:43,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:08:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:08:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 370 proven. 52 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-28 12:08:43,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519956760] [2020-10-28 12:08:43,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:43,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:08:43,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227844480] [2020-10-28 12:08:43,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:08:43,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:43,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:08:43,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:08:43,309 INFO L87 Difference]: Start difference. First operand 22700 states and 25529 transitions. Second operand 8 states. [2020-10-28 12:08:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:48,809 INFO L93 Difference]: Finished difference Result 50426 states and 56812 transitions. [2020-10-28 12:08:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:08:48,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 559 [2020-10-28 12:08:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:48,877 INFO L225 Difference]: With dead ends: 50426 [2020-10-28 12:08:48,877 INFO L226 Difference]: Without dead ends: 25784 [2020-10-28 12:08:48,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:08:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25784 states. [2020-10-28 12:08:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25784 to 24596. [2020-10-28 12:08:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24596 states. [2020-10-28 12:08:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24596 states to 24596 states and 27490 transitions. [2020-10-28 12:08:49,250 INFO L78 Accepts]: Start accepts. Automaton has 24596 states and 27490 transitions. Word has length 559 [2020-10-28 12:08:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:49,251 INFO L481 AbstractCegarLoop]: Abstraction has 24596 states and 27490 transitions. [2020-10-28 12:08:49,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:08:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 24596 states and 27490 transitions. [2020-10-28 12:08:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-28 12:08:49,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:49,268 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:49,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:08:49,268 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:49,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1262533835, now seen corresponding path program 1 times [2020-10-28 12:08:49,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:49,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833112624] [2020-10-28 12:08:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:49,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3027 [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:08:52,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:52,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:52,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:52,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:08:52,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:08:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:08:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:08:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:08:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:52,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:52,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:52,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:08:52,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:08:52,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:52,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:08:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-28 12:08:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:53,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:53,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:08:53,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:08:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:53,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:08:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:53,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-28 12:08:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:53,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:53,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:53,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:08:53,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:53,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:08:53,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:53,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:53,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:53,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-28 12:08:53,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:53,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 476 proven. 192 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2020-10-28 12:08:53,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833112624] [2020-10-28 12:08:53,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:53,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:53,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854661054] [2020-10-28 12:08:53,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:53,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:53,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:53,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:53,456 INFO L87 Difference]: Start difference. First operand 24596 states and 27490 transitions. Second operand 7 states. [2020-10-28 12:08:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:58,151 INFO L93 Difference]: Finished difference Result 48258 states and 53996 transitions. [2020-10-28 12:08:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:08:58,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 602 [2020-10-28 12:08:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:58,208 INFO L225 Difference]: With dead ends: 48258 [2020-10-28 12:08:58,208 INFO L226 Difference]: Without dead ends: 23468 [2020-10-28 12:08:58,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:08:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23468 states. [2020-10-28 12:08:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23468 to 22476. [2020-10-28 12:08:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22476 states. [2020-10-28 12:08:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22476 states to 22476 states and 24884 transitions. [2020-10-28 12:08:58,682 INFO L78 Accepts]: Start accepts. Automaton has 22476 states and 24884 transitions. Word has length 602 [2020-10-28 12:08:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:58,683 INFO L481 AbstractCegarLoop]: Abstraction has 22476 states and 24884 transitions. [2020-10-28 12:08:58,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 22476 states and 24884 transitions. [2020-10-28 12:08:58,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2020-10-28 12:08:58,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:58,702 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:58,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:08:58,702 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:58,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:58,703 INFO L82 PathProgramCache]: Analyzing trace with hash 913525177, now seen corresponding path program 1 times [2020-10-28 12:08:58,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:58,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398467476] [2020-10-28 12:08:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 624 [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2543 [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 353 [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:09:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:09:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:09:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:09:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:09:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 12:09:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-28 12:09:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:09:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 12:09:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:09:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-28 12:09:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-28 12:09:02,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:02,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 505 proven. 85 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2020-10-28 12:09:02,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398467476] [2020-10-28 12:09:02,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:02,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:02,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125427379] [2020-10-28 12:09:02,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:02,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:02,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:02,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:02,293 INFO L87 Difference]: Start difference. First operand 22476 states and 24884 transitions. Second operand 7 states. [2020-10-28 12:09:05,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:05,665 INFO L93 Difference]: Finished difference Result 45006 states and 49938 transitions. [2020-10-28 12:09:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:05,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 604 [2020-10-28 12:09:05,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:05,707 INFO L225 Difference]: With dead ends: 45006 [2020-10-28 12:09:05,707 INFO L226 Difference]: Without dead ends: 24638 [2020-10-28 12:09:05,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24638 states. [2020-10-28 12:09:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24638 to 23640. [2020-10-28 12:09:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23640 states. [2020-10-28 12:09:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23640 states to 23640 states and 26118 transitions. [2020-10-28 12:09:06,022 INFO L78 Accepts]: Start accepts. Automaton has 23640 states and 26118 transitions. Word has length 604 [2020-10-28 12:09:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:06,022 INFO L481 AbstractCegarLoop]: Abstraction has 23640 states and 26118 transitions. [2020-10-28 12:09:06,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 23640 states and 26118 transitions. [2020-10-28 12:09:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-28 12:09:06,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:06,040 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:06,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 12:09:06,040 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:06,041 INFO L82 PathProgramCache]: Analyzing trace with hash 44414080, now seen corresponding path program 1 times [2020-10-28 12:09:06,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:06,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758856224] [2020-10-28 12:09:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:07,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 634 [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:09:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:07,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:07,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:09:07,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:07,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:07,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:09:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:07,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:07,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:09:07,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:09:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:07,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:07,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:07,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:09:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:07,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 12:09:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 12:09:07,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:07,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:07,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:09:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:07,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-28 12:09:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:07,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:07,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:09:07,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 12:09:07,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:07,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 12:09:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-28 12:09:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:07,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:09:07,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:09:07,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:07,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-28 12:09:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 567 proven. 120 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-28 12:09:08,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758856224] [2020-10-28 12:09:08,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:08,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:09:08,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276861015] [2020-10-28 12:09:08,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:09:08,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:08,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:09:08,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:09:08,119 INFO L87 Difference]: Start difference. First operand 23640 states and 26118 transitions. Second operand 8 states. [2020-10-28 12:09:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:12,817 INFO L93 Difference]: Finished difference Result 47563 states and 52516 transitions. [2020-10-28 12:09:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:09:12,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 614 [2020-10-28 12:09:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:12,867 INFO L225 Difference]: With dead ends: 47563 [2020-10-28 12:09:12,867 INFO L226 Difference]: Without dead ends: 24117 [2020-10-28 12:09:12,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:09:12,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24117 states. [2020-10-28 12:09:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24117 to 23668. [2020-10-28 12:09:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23668 states. [2020-10-28 12:09:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23668 states to 23668 states and 25851 transitions. [2020-10-28 12:09:13,318 INFO L78 Accepts]: Start accepts. Automaton has 23668 states and 25851 transitions. Word has length 614 [2020-10-28 12:09:13,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:13,319 INFO L481 AbstractCegarLoop]: Abstraction has 23668 states and 25851 transitions. [2020-10-28 12:09:13,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:09:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 23668 states and 25851 transitions. [2020-10-28 12:09:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2020-10-28 12:09:13,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:13,333 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:13,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 12:09:13,333 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:13,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1142039117, now seen corresponding path program 1 times [2020-10-28 12:09:13,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:13,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695170060] [2020-10-28 12:09:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:13,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:14,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-28 12:09:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-28 12:09:14,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:14,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 408 [2020-10-28 12:09:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:09:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:14,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:14,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:14,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:14,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:09:14,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:14,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:14,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:14,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:14,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:09:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:09:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:14,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:09:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:14,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:14,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:14,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:09:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:09:14,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:14,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:14,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-28 12:09:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:14,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:14,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 12:09:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:09:14,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:14,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:09:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:14,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-10-28 12:09:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:14,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:14,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:09:14,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:14,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:09:14,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:14,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:09:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:14,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-10-28 12:09:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 521 proven. 85 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2020-10-28 12:09:15,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695170060] [2020-10-28 12:09:15,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:15,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:15,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420017886] [2020-10-28 12:09:15,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:15,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:15,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:15,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:15,056 INFO L87 Difference]: Start difference. First operand 23668 states and 25851 transitions. Second operand 7 states.